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How to conjugate Fortalecer in Spanish

fortalecer to strengthen Irregular Verb

At a glance: Fortalecer (to strengthen) is a irregular verb in Spanish. In the present tense: fortalezco, fortaleces, fortalece, fortalecemos, fortalecéis, fortalecen. Yo adds a z (fortalezco); the other forms are regular. It is also irregular in the present subjunctive (fortalezca).

Past participle
fortalecido strengthened
Gerund
fortaleciendo strengthening
Similar
potenciar, reforzar

Fortalecer conjugation tables as a PDF

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Indicative tenses of Fortalecer

Fortalecer in the Indicative Present

The Indicative Present of fortalecer is used to talk about situations, events or thoughts that are happening now or in the near future. It is also used to talk about facts and truths. For example, “fortalezco”, meaning “I strengthen”.

In Spanish, the Indicative Present is known as "El Presente".

PronounSpanishEnglish
YofortalezcoI strengthen
Túfortalecesyou strengthen
Ella / Él / Ustedfortaleces/he strengthens
Nosotras / Nosotrosfortalecemoswe strengthen
Vosotras / Vosotrosfortalecéisyou (plural) strengthen
Ellas / Ellos / Ustedesfortalecenthey strengthen

How it’s built: Yo adds a z (fortalezco); the other forms are regular.

Letters in red show where a form differs from the regular pattern.

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Fortalecer in the Indicative Preterite

The Indicative Preterite of fortalecer is used to talk about actions completed in the past, at a specific point in time. For example, “fortalecí”, meaning “I strengthened”.

In Spanish, the Indicative Preterite is known as "El Pretérito Indefinido".

PronounSpanishEnglish
YofortalecíI strengthened
Túfortalecisteyou strengthened
Ella / Él / Ustedfortaleciós/he strengthened
Nosotras / Nosotrosfortalecimoswe strengthened
Vosotras / Vosotrosfortalecisteisyou (plural) strengthened
Ellas / Ellos / Ustedesfortalecieronthey strengthened

How it’s built: Regular: stem fortalec- plus the -er endings.

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Fortalecer in the Indicative Imperfect

The Indicative Imperfect of fortalecer is used to describe regular and repeated actions that happened in the past and descriptions of things you used to do. For example, “fortalecía”, meaning “I used to strengthen”.

In Spanish, the Indicative Imperfect is known as "El Pretérito Imperfecto".

PronounSpanishEnglish
YofortalecíaI used to strengthen
Túfortalecíasyou used to strengthen
Ella / Él / Ustedfortalecías/he used to strengthen
Nosotras / Nosotrosfortalecíamoswe used to strengthen
Vosotras / Vosotrosfortalecíaisyou (plural) used to strengthen
Ellas / Ellos / Ustedesfortalecíanthey used to strengthen

How it’s built: Regular: stem fortalec- plus the -er endings.

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Fortalecer in the Indicative Present Continuous

The Indicative Present Continuous of fortalecer is used to talk about something that is happening continuously or right now. For example, “estoy fortaleciendo”, meaning “I am strengthening”.

In Spanish, the Indicative Present Continuous is known as "El Presente Progresivo".

PronounSpanishEnglish
Yoestoy fortaleciendoI am strengthening
Túestás fortaleciendoyou are strengthening
Ella / Él / Ustedestá fortaleciendos/he is strengthening
Nosotras / Nosotrosestamos fortaleciendowe are strengthening
Vosotras / Vosotrosestáis fortaleciendoyou (plural) are strengthening
Ellas / Ellos / Ustedesestán fortaleciendothey are strengthening

How it’s built: Estar in the present (estoy, estás, está, estamos, estáis, están) plus the gerund fortaleciendo.

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Fortalecer in the Indicative Informal Future

The Indicative Informal Future of fortalecer is used to talk about something that will happen in the future, especially in the near future. For example, “voy a fortalecer”, meaning “I am going to strengthen”.

In Spanish, the Indicative Informal Future is known as "El Futuro Próximo".

PronounSpanishEnglish
Yovoy a fortalecerI am going to strengthen
Túvas a fortaleceryou are going to strengthen
Ella / Él / Ustedva a fortalecers/he is going to strengthen
Nosotras / Nosotrosvamos a fortalecerwe are going to strengthen
Vosotras / Vosotrosvais a fortaleceryou (plural) are going to strengthen
Ellas / Ellos / Ustedesvan a fortalecerthey are going to strengthen

How it’s built: Ir in the present (voy, vas, va, vamos, vais, van), then a, then the infinitive fortalecer.

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Fortalecer in the Indicative Future

The Indicative Future of fortalecer is used to talk about something that will happen in the future. For example, “fortaleceré”, meaning “I will strengthen”.

In Spanish, the Indicative Future is known as "El Futuro Simple".

PronounSpanishEnglish
YofortaleceréI will strengthen
Túfortalecerásyou will strengthen
Ella / Él / Ustedfortalecerás/he will strengthen
Nosotras / Nosotrosfortaleceremoswe will strengthen
Vosotras / Vosotrosfortaleceréisyou (plural) will strengthen
Ellas / Ellos / Ustedesfortaleceránthey will strengthen

How it’s built: Regular: the infinitive fortalecer plus the future endings.

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Fortalecer in the Indicative Conditional

The Indicative Conditional of fortalecer is used to talk about something that may happen in the future, hypothesis and probabilities. For example, “fortalecería”, meaning “I would strengthen”.

In Spanish, the Indicative Conditional is known as "El Condicional Simple".

PronounSpanishEnglish
YofortaleceríaI would strengthen
Túfortaleceríasyou would strengthen
Ella / Él / Ustedfortalecerías/he would strengthen
Nosotras / Nosotrosfortaleceríamoswe would strengthen
Vosotras / Vosotrosfortaleceríaisyou (plural) would strengthen
Ellas / Ellos / Ustedesfortaleceríanthey would strengthen

How it’s built: Regular: the infinitive fortalecer plus the conditional endings.

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Fortalecer in the Indicative Present Perfect

The Indicative Present Perfect of fortalecer is used to describe actions that started recently (in the past) and are still happening now or things that have been done recently. For example, “he fortalecido”, meaning “I have strengthened”.

In Spanish, the Indicative Present Perfect is known as "El Pretérito Perfecto".

PronounSpanishEnglish
Yohe fortalecidoI have strengthened
Túhas fortalecidoyou have strengthened
Ella / Él / Ustedha fortalecidos/he has strengthened
Nosotras / Nosotroshemos fortalecidowe have strengthened
Vosotras / Vosotroshabéis fortalecidoyou (plural) have strengthened
Ellas / Ellos / Ustedeshan fortalecidothey have strengthened

How it’s built: Haber in the present (he, has, ha, hemos, habéis, han) plus the past participle fortalecido.

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Fortalecer in the Indicative Past Perfect

The Indicative Past Perfect of fortalecer is used to talk about actions that happened before another action in the past. For example, “había fortalecido”, meaning “I had strengthened”.

In Spanish, the Indicative Past Perfect is known as "El Pretérito Pluscuamperfecto".

PronounSpanishEnglish
Yohabía fortalecidoI had strengthened
Túhabías fortalecidoyou had strengthened
Ella / Él / Ustedhabía fortalecidos/he had strengthened
Nosotras / Nosotroshabíamos fortalecidowe had strengthened
Vosotras / Vosotroshabíais fortalecidoyou (plural) had strengthened
Ellas / Ellos / Ustedeshabían fortalecidothey had strengthened

How it’s built: Haber in the imperfect (había, habías, había, habíamos, habíais, habían) plus the past participle fortalecido.

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Fortalecer in the Indicative Future Perfect

The Indicative Future Perfect of fortalecer is used to talk about something that will have happened in the future after something else has already happened. For example, “habré fortalecido”, meaning “I will have strengthened”.

In Spanish, the Indicative Future Perfect is known as "El Futuro Perfecto".

PronounSpanishEnglish
Yohabré fortalecidoI will have strengthened
Túhabrás fortalecidoyou will have strengthened
Ella / Él / Ustedhabrá fortalecidos/he will have strengthened
Nosotras / Nosotroshabremos fortalecidowe will have strengthened
Vosotras / Vosotroshabréis fortalecidoyou (plural) will have strengthened
Ellas / Ellos / Ustedeshabrán fortalecidothey will have strengthened

How it’s built: Haber in the future (habré, habrás, habrá, habremos, habréis, habrán) plus the past participle fortalecido.

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Fortalecer in the Indicative Conditional Perfect

The Indicative Conditional Perfect of fortalecer is used to talk about something that would have happened in the past but didn’t due to another action. For example, “habría fortalecido”, meaning “I would have strengthened”.

In Spanish, the Indicative Conditional Perfect is known as "El Condicional Perfecto".

PronounSpanishEnglish
Yohabría fortalecidoI would have strengthened
Túhabrías fortalecidoyou would have strengthened
Ella / Él / Ustedhabría fortalecidos/he would have strengthened
Nosotras / Nosotroshabríamos fortalecidowe would have strengthened
Vosotras / Vosotroshabríais fortalecidoyou (plural) would have strengthened
Ellas / Ellos / Ustedeshabrían fortalecidothey would have strengthened

How it’s built: Haber in the conditional (habría, habrías, habría, habríamos, habríais, habrían) plus the past participle fortalecido.

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Subjunctive tenses of Fortalecer

Fortalecer in the Subjunctive Present

The Subjunctive Present is used to talk about situations of uncertainty, or emotions such as wishes, desires and hopes. It differs from the indicative mood due to the uncertainty of the events which are being spoken about. For example, “fortalezca”, meaning “I strengthen”.

In Spanish, the Subjunctive Present is known as "El Presente de Subjuntivo".

PronounSpanishEnglish
YofortalezcaI strengthen
Túfortalezcasyou strengthen
Ella / Él / Ustedfortalezcas/he strengthens
Nosotras / Nosotrosfortalezcamoswe strengthen
Vosotras / Vosotrosfortalezcáisyou (plural) strengthen
Ellas / Ellos / Ustedesfortalezcanthey strengthen

How it’s built: Every form follows the yo present, fortalezco (fortalezca, fortalezcas, fortalezca, fortalezcamos, fortalezcáis, fortalezcan).

Letters in red show where a form differs from the regular pattern.

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Fortalecer in the Subjunctive Imperfect

The Subjunctive Imperfect is used to speak about unlikely or uncertain events in the past or to cast an opinion (emotional) about something that happened in the past. For example, “fortaleciera”, meaning “I strengthened”.

In Spanish, the Subjunctive Imperfect is known as "El Imperfecto Subjuntivo".

PronounSpanishEnglish
YofortalecieraI strengthened
Túfortalecierasyou strengthened
Ella / Él / Ustedfortalecieras/he strengthened
Nosotras / Nosotrosfortaleciéramoswe strengthened
Vosotras / Vosotrosfortalecieraisyou (plural) strengthened
Ellas / Ellos / Ustedesfortalecieranthey strengthened

How it’s built: Regular: the ellas/ellos preterite, fortalecieron, without -ron, plus the -ra endings; nosotros adds an accent (fortaleciéramos).

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Fortalecer in the Subjunctive Future

The Subjunctive Future is used to speak about hypothetical situations, and actions/events that may happen in the future. For example, “fortaleciere”, meaning “I will strengthen”.

In Spanish, the Subjunctive Future is known as "El Futuro de Subjuntivo".

PronounSpanishEnglish
YofortaleciereI will strengthen
Túfortalecieresyou will strengthen
Ella / Él / Ustedfortalecieres/he will strengthen
Nosotras / Nosotrosfortaleciéremoswe will strengthen
Vosotras / Vosotrosfortaleciereisyou (plural) will strengthen
Ellas / Ellos / Ustedesfortalecierenthey will strengthen

How it’s built: Regular: the ellas/ellos preterite, fortalecieron, without -ron, plus the -re endings; nosotros adds an accent (fortaleciéremos).

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Fortalecer in the Subjunctive Present Perfect

The Subjunctive Present Perfect is used to describe past actions or events that are still connected to the present day and to speak about an action that will have happened by a certain time in the future. For example, “haya fortalecido”, meaning “I have strengthened”.

In Spanish, the Subjunctive Present Perfect is known as "El Pretérito Perfecto de Subjuntivo".

PronounSpanishEnglish
Yohaya fortalecidoI have strengthened
Túhayas fortalecidoyou have strengthened
Ella / Él / Ustedhaya fortalecidos/he has strengthened
Nosotras / Nosotroshayamos fortalecidowe have strengthened
Vosotras / Vosotroshayáis fortalecidoyou (plural) have strengthened
Ellas / Ellos / Ustedeshayan fortalecidothey have strengthened

How it’s built: Haber in the subjunctive present (haya, hayas, haya, hayamos, hayáis, hayan) plus the past participle fortalecido.

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Fortalecer in the Subjunctive Past Perfect

The Subjunctive Past Perfect is used to speak about hypothetical situations, and actions/events that occurred before other actions/events in the past. For example, “hubiera fortalecido”, meaning “I had strengthened”.

In Spanish, the Subjunctive Past Perfect is known as "El Pretérito Pluscuamperfecto de Subjuntivo".

PronounSpanishEnglish
Yohubiera fortalecidoI had strengthened
Túhubieras fortalecidoyou had strengthened
Ella / Él / Ustedhubiera fortalecidos/he had strengthened
Nosotras / Nosotroshubiéramos fortalecidowe had strengthened
Vosotras / Vosotroshubierais fortalecidoyou (plural) had strengthened
Ellas / Ellos / Ustedeshubieran fortalecidothey had strengthened

How it’s built: Haber in the subjunctive imperfect (hubiera, hubieras, hubiera, hubiéramos, hubierais, hubieran) plus the past participle fortalecido.

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Fortalecer in the Subjunctive Future Perfect

The Subjunctive Future Perfect is used to speak about something that will have happened if a hypothetical situations occurs in the future. For example, “hubiere fortalecido”, meaning “I will have strengthened”.

In Spanish, the Subjunctive Future Perfect is known as "El Futuro Perfecto de Subjuntivo".

PronounSpanishEnglish
Yohubiere fortalecidoI will have strengthened
Túhubieres fortalecidoyou will have strengthened
Ella / Él / Ustedhubiere fortalecidos/he will have strengthened
Nosotras / Nosotroshubiéremos fortalecidowe will have strengthened
Vosotras / Vosotroshubiereis fortalecidoyou (plural) will have strengthened
Ellas / Ellos / Ustedeshubieren fortalecidothey will have strengthened

How it’s built: Haber in the subjunctive future (hubiere, hubieres, hubiere, hubiéremos, hubiereis, hubieren) plus the past participle fortalecido.

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Imperative tenses of Fortalecer

Fortalecer in the Imperative Affirmative

The Imperative Affirmative is used to give orders and commands, to tell someone to do something. For example, “fortalezca”, meaning “(to you formal) strengthen!”.

In Spanish, the Imperative Affirmative is known as "El Imperativo Afirmativo".

PronounSpanishEnglish
Yo--
Túfortalece(to you) strengthen!
Ella / Él / Ustedfortalezca(to you formal) strengthen!
Nosotras / Nosotrosfortalezcamoslet's strengthen!
Vosotras / Vosotrosfortaleced(to you plural) strengthen!
Ellas / Ellos / Ustedesfortalezcan(to you plural formal) strengthen!

How it’s built: Tú takes the ella/él present (fortalece); usted, nosotros and ustedes take the subjunctive present (fortalezca, fortalezcamos, fortalezcan); vosotros swaps the final r of the infinitive for a d (fortaleced).

Letters in red show where a form differs from the regular pattern.

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Fortalecer in the Imperative Negative

The Imperative Negative is used to give orders and commands, telling someone not to do something. For example, “no fortalezca”, meaning “(to you formal) don't strengthen!”.

In Spanish, the Imperative Negative is known as "El Imperativo Negativo".

PronounSpanishEnglish
Yo--
Túno fortalezcas(to you) don't strengthen!
Ella / Él / Ustedno fortalezca(to you formal) don't strengthen!
Nosotras / Nosotrosno fortalezcamoslet's not strengthen!
Vosotras / Vosotrosno fortalezcáis(to you plural) don't strengthen!
Ellas / Ellos / Ustedesno fortalezcan(to you plural formal) don't strengthen!

How it’s built: No plus the subjunctive present: no fortalezcas, no fortalezca, no fortalezcamos, no fortalezcáis, no fortalezcan.

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Frequently asked questions about Fortalecer

Is fortalecer a regular or irregular verb?

Fortalecer is an irregular Spanish verb. In the present tense: yo adds a z (fortalezco); the other forms are regular. It is also irregular in the present subjunctive (fortalezca).

How do you conjugate fortalecer in the present tense (presente)?

In the present tense (presente), fortalecer is conjugated as: yo fortalezco, tú fortaleces, él/ella/usted fortalece, nosotros fortalecemos, vosotros fortalecéis, ellos/ellas/ustedes fortalecen. The present tense is used To talk about situations, events or thoughts that are happening now or in the near future. It is also used to talk about facts and truths.

How do you conjugate fortalecer in the preterite (pretérito indefinido)?

In the preterite (pretérito indefinido), fortalecer is conjugated as: yo fortalecí, tú fortaleciste, él/ella/usted fortaleció, nosotros fortalecimos, vosotros fortalecisteis, ellos/ellas/ustedes fortalecieron. The preterite is used To talk about actions completed in the past, at a specific point in time.

How do you conjugate fortalecer in the imperfect (pretérito imperfecto)?

In the imperfect (pretérito imperfecto), fortalecer is conjugated as: yo fortalecía, tú fortalecías, él/ella/usted fortalecía, nosotros fortalecíamos, vosotros fortalecíais, ellos/ellas/ustedes fortalecían. The imperfect is used To describe regular and repeated actions that happened in the past and descriptions of things you used to do.

How do you conjugate fortalecer in the future tense (futuro simple)?

In the future tense (futuro simple), fortalecer is conjugated as: yo fortaleceré, tú fortalecerás, él/ella/usted fortalecerá, nosotros fortaleceremos, vosotros fortaleceréis, ellos/ellas/ustedes fortalecerán. The future tense is used To talk about something that will happen in the future.

How do you conjugate fortalecer in the present subjunctive (subjuntivo presente)?

In the present subjunctive (subjuntivo presente), fortalecer is conjugated as: yo fortalezca, tú fortalezcas, él/ella/usted fortalezca, nosotros fortalezcamos, vosotros fortalezcáis, ellos/ellas/ustedes fortalezcan. The present subjunctive is used To talk about situations of uncertainty, or emotions such as wishes, desires and hopes. It differs from the indicative mood due to the uncertainty of the events which are being spoken about.


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