Ella Verbsacertar to guess correctly, to get (something) right, to hit (the mark) Irregular Verb
At a glance: Acertar (to guess correctly, to get (something) right, to hit (the mark)) is a irregular verb in Spanish. In the present tense: acierto, aciertas, acierta, acertamos, acertáis, aciertan. Yo, tú, ella/él and ellas/ellos change e to ie (acierto, aciertas, acierta, aciertan); nosotros and vosotros are regular. It is also irregular in the present subjunctive (acierte).

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The Indicative Present of acertar 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, “acierto”, meaning “I guess correctly”.
In Spanish, the Indicative Present is known as "El Presente".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | acierto | I guess correctly |
| Tú | aciertas | you guess correctly |
| Ella / Él / Usted | acierta | s/he guesses correctly |
| Nosotras / Nosotros | acertamos | we guess correctly |
| Vosotras / Vosotros | acertáis | you (plural) guess correctly |
| Ellas / Ellos / Ustedes | aciertan | they guess correctly |
How it’s built: Yo, tú, ella/él and ellas/ellos change e to ie (acierto, aciertas, acierta, aciertan); nosotros and vosotros are regular.
Letters in red show where a form differs from the regular pattern.
The Indicative Preterite of acertar is used to talk about actions completed in the past, at a specific point in time. For example, “acerté”, meaning “I guessed correctly”.
In Spanish, the Indicative Preterite is known as "El Pretérito Indefinido".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | acerté | I guessed correctly |
| Tú | acertaste | you guessed correctly |
| Ella / Él / Usted | acertó | s/he guessed correctly |
| Nosotras / Nosotros | acertamos | we guessed correctly |
| Vosotras / Vosotros | acertasteis | you (plural) guessed correctly |
| Ellas / Ellos / Ustedes | acertaron | they guessed correctly |
How it’s built: Regular: stem acert- plus the -ar endings.
The Indicative Imperfect of acertar is used to describe regular and repeated actions that happened in the past and descriptions of things you used to do. For example, “acertaba”, meaning “I used to guess correctly”.
In Spanish, the Indicative Imperfect is known as "El Pretérito Imperfecto".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | acertaba | I used to guess correctly |
| Tú | acertabas | you used to guess correctly |
| Ella / Él / Usted | acertaba | s/he used to guess correctly |
| Nosotras / Nosotros | acertábamos | we used to guess correctly |
| Vosotras / Vosotros | acertabais | you (plural) used to guess correctly |
| Ellas / Ellos / Ustedes | acertaban | they used to guess correctly |
How it’s built: Regular: stem acert- plus the -ar endings.
The Indicative Present Continuous of acertar is used to talk about something that is happening continuously or right now. For example, “estoy acertando”, meaning “I am guessing correctly”.
In Spanish, the Indicative Present Continuous is known as "El Presente Progresivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | estoy acertando | I am guessing correctly |
| Tú | estás acertando | you are guessing correctly |
| Ella / Él / Usted | está acertando | s/he is guessing correctly |
| Nosotras / Nosotros | estamos acertando | we are guessing correctly |
| Vosotras / Vosotros | estáis acertando | you (plural) are guessing correctly |
| Ellas / Ellos / Ustedes | están acertando | they are guessing correctly |
How it’s built: Estar in the present (estoy, estás, está, estamos, estáis, están) plus the gerund acertando.
The Indicative Informal Future of acertar is used to talk about something that will happen in the future, especially in the near future. For example, “voy a acertar”, meaning “I am going to guess correctly”.
In Spanish, the Indicative Informal Future is known as "El Futuro Próximo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | voy a acertar | I am going to guess correctly |
| Tú | vas a acertar | you are going to guess correctly |
| Ella / Él / Usted | va a acertar | s/he is going to guess correctly |
| Nosotras / Nosotros | vamos a acertar | we are going to guess correctly |
| Vosotras / Vosotros | vais a acertar | you (plural) are going to guess correctly |
| Ellas / Ellos / Ustedes | van a acertar | they are going to guess correctly |
How it’s built: Ir in the present (voy, vas, va, vamos, vais, van), then a, then the infinitive acertar.
The Indicative Future of acertar is used to talk about something that will happen in the future. For example, “acertaré”, meaning “I will guess correctly”.
In Spanish, the Indicative Future is known as "El Futuro Simple".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | acertaré | I will guess correctly |
| Tú | acertarás | you will guess correctly |
| Ella / Él / Usted | acertará | s/he will guess correctly |
| Nosotras / Nosotros | acertaremos | we will guess correctly |
| Vosotras / Vosotros | acertaréis | you (plural) will guess correctly |
| Ellas / Ellos / Ustedes | acertarán | they will guess correctly |
How it’s built: Regular: the infinitive acertar plus the future endings.
The Indicative Conditional of acertar is used to talk about something that may happen in the future, hypothesis and probabilities. For example, “acertaría”, meaning “I would guess correctly”.
In Spanish, the Indicative Conditional is known as "El Condicional Simple".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | acertaría | I would guess correctly |
| Tú | acertarías | you would guess correctly |
| Ella / Él / Usted | acertaría | s/he would guess correctly |
| Nosotras / Nosotros | acertaríamos | we would guess correctly |
| Vosotras / Vosotros | acertaríais | you (plural) would guess correctly |
| Ellas / Ellos / Ustedes | acertarían | they would guess correctly |
How it’s built: Regular: the infinitive acertar plus the conditional endings.
The Indicative Present Perfect of acertar 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 acertado”, meaning “I have guessed correctly”.
In Spanish, the Indicative Present Perfect is known as "El Pretérito Perfecto".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | he acertado | I have guessed correctly |
| Tú | has acertado | you have guessed correctly |
| Ella / Él / Usted | ha acertado | s/he has guessed correctly |
| Nosotras / Nosotros | hemos acertado | we have guessed correctly |
| Vosotras / Vosotros | habéis acertado | you (plural) have guessed correctly |
| Ellas / Ellos / Ustedes | han acertado | they have guessed correctly |
How it’s built: Haber in the present (he, has, ha, hemos, habéis, han) plus the past participle acertado.
The Indicative Past Perfect of acertar is used to talk about actions that happened before another action in the past. For example, “había acertado”, meaning “I had guessed correctly”.
In Spanish, the Indicative Past Perfect is known as "El Pretérito Pluscuamperfecto".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | había acertado | I had guessed correctly |
| Tú | habías acertado | you had guessed correctly |
| Ella / Él / Usted | había acertado | s/he had guessed correctly |
| Nosotras / Nosotros | habíamos acertado | we had guessed correctly |
| Vosotras / Vosotros | habíais acertado | you (plural) had guessed correctly |
| Ellas / Ellos / Ustedes | habían acertado | they had guessed correctly |
How it’s built: Haber in the imperfect (había, habías, había, habíamos, habíais, habían) plus the past participle acertado.
The Indicative Future Perfect of acertar is used to talk about something that will have happened in the future after something else has already happened. For example, “habré acertado”, meaning “I will have guessed correctly”.
In Spanish, the Indicative Future Perfect is known as "El Futuro Perfecto".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | habré acertado | I will have guessed correctly |
| Tú | habrás acertado | you will have guessed correctly |
| Ella / Él / Usted | habrá acertado | s/he will have guessed correctly |
| Nosotras / Nosotros | habremos acertado | we will have guessed correctly |
| Vosotras / Vosotros | habréis acertado | you (plural) will have guessed correctly |
| Ellas / Ellos / Ustedes | habrán acertado | they will have guessed correctly |
How it’s built: Haber in the future (habré, habrás, habrá, habremos, habréis, habrán) plus the past participle acertado.
The Indicative Conditional Perfect of acertar is used to talk about something that would have happened in the past but didn’t due to another action. For example, “habría acertado”, meaning “I would have guessed correctly”.
In Spanish, the Indicative Conditional Perfect is known as "El Condicional Perfecto".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | habría acertado | I would have guessed correctly |
| Tú | habrías acertado | you would have guessed correctly |
| Ella / Él / Usted | habría acertado | s/he would have guessed correctly |
| Nosotras / Nosotros | habríamos acertado | we would have guessed correctly |
| Vosotras / Vosotros | habríais acertado | you (plural) would have guessed correctly |
| Ellas / Ellos / Ustedes | habrían acertado | they would have guessed correctly |
How it’s built: Haber in the conditional (habría, habrías, habría, habríamos, habríais, habrían) plus the past participle acertado.
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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, “acierte”, meaning “I guess correctly”.
In Spanish, the Subjunctive Present is known as "El Presente de Subjuntivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | acierte | I guess correctly |
| Tú | aciertes | you guess correctly |
| Ella / Él / Usted | acierte | s/he guesses correctly |
| Nosotras / Nosotros | acertemos | we guess correctly |
| Vosotras / Vosotros | acertéis | you (plural) guess correctly |
| Ellas / Ellos / Ustedes | acierten | they guess correctly |
How it’s built: Yo, tú, ella/él and ellas/ellos follow the yo present, acierto (acierte, aciertes, acierte, acierten); nosotros and vosotros are regular.
Letters in red show where a form differs from the regular pattern.
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, “acertara”, meaning “I guessed correctly”.
In Spanish, the Subjunctive Imperfect is known as "El Imperfecto Subjuntivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | acertara | I guessed correctly |
| Tú | acertaras | you guessed correctly |
| Ella / Él / Usted | acertara | s/he guessed correctly |
| Nosotras / Nosotros | acertáramos | we guessed correctly |
| Vosotras / Vosotros | acertarais | you (plural) guessed correctly |
| Ellas / Ellos / Ustedes | acertaran | they guessed correctly |
How it’s built: Regular: the ellas/ellos preterite, acertaron, without -ron, plus the -ra endings; nosotros adds an accent (acertáramos).
The Subjunctive Future is used to speak about hypothetical situations, and actions/events that may happen in the future. For example, “acertare”, meaning “I will guess correctly”.
In Spanish, the Subjunctive Future is known as "El Futuro de Subjuntivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | acertare | I will guess correctly |
| Tú | acertares | you will guess correctly |
| Ella / Él / Usted | acertare | s/he will guess correctly |
| Nosotras / Nosotros | acertáremos | we will guess correctly |
| Vosotras / Vosotros | acertareis | you (plural) will guess correctly |
| Ellas / Ellos / Ustedes | acertaren | they will guess correctly |
How it’s built: Regular: the ellas/ellos preterite, acertaron, without -ron, plus the -re endings; nosotros adds an accent (acertáremos).
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 acertado”, meaning “I have guessed correctly”.
In Spanish, the Subjunctive Present Perfect is known as "El Pretérito Perfecto de Subjuntivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | haya acertado | I have guessed correctly |
| Tú | hayas acertado | you have guessed correctly |
| Ella / Él / Usted | haya acertado | s/he has guessed correctly |
| Nosotras / Nosotros | hayamos acertado | we have guessed correctly |
| Vosotras / Vosotros | hayáis acertado | you (plural) have guessed correctly |
| Ellas / Ellos / Ustedes | hayan acertado | they have guessed correctly |
How it’s built: Haber in the subjunctive present (haya, hayas, haya, hayamos, hayáis, hayan) plus the past participle acertado.
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 acertado”, meaning “I had guessed correctly”.
In Spanish, the Subjunctive Past Perfect is known as "El Pretérito Pluscuamperfecto de Subjuntivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | hubiera acertado | I had guessed correctly |
| Tú | hubieras acertado | you had guessed correctly |
| Ella / Él / Usted | hubiera acertado | s/he had guessed correctly |
| Nosotras / Nosotros | hubiéramos acertado | we had guessed correctly |
| Vosotras / Vosotros | hubierais acertado | you (plural) had guessed correctly |
| Ellas / Ellos / Ustedes | hubieran acertado | they had guessed correctly |
How it’s built: Haber in the subjunctive imperfect (hubiera, hubieras, hubiera, hubiéramos, hubierais, hubieran) plus the past participle acertado.
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 acertado”, meaning “I will have guessed correctly”.
In Spanish, the Subjunctive Future Perfect is known as "El Futuro Perfecto de Subjuntivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | hubiere acertado | I will have guessed correctly |
| Tú | hubieres acertado | you will have guessed correctly |
| Ella / Él / Usted | hubiere acertado | s/he will have guessed correctly |
| Nosotras / Nosotros | hubiéremos acertado | we will have guessed correctly |
| Vosotras / Vosotros | hubiereis acertado | you (plural) will have guessed correctly |
| Ellas / Ellos / Ustedes | hubieren acertado | they will have guessed correctly |
How it’s built: Haber in the subjunctive future (hubiere, hubieres, hubiere, hubiéremos, hubiereis, hubieren) plus the past participle acertado.
The Imperative Affirmative is used to give orders and commands, to tell someone to do something. For example, “acierte”, meaning “(to you formal) guess correctly!”.
In Spanish, the Imperative Affirmative is known as "El Imperativo Afirmativo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | - | - |
| Tú | acierta | (to you) guess correctly! |
| Ella / Él / Usted | acierte | (to you formal) guess correctly! |
| Nosotras / Nosotros | acertemos | let's guess correctly! |
| Vosotras / Vosotros | acertad | (to you plural) guess correctly! |
| Ellas / Ellos / Ustedes | acierten | (to you plural formal) guess correctly! |
How it’s built: Tú takes the ella/él present (acierta); usted, nosotros and ustedes take the subjunctive present (acierte, acertemos, acierten); vosotros swaps the final r of the infinitive for a d (acertad).
Letters in red show where a form differs from the regular pattern.
The Imperative Negative is used to give orders and commands, telling someone not to do something. For example, “no acierte”, meaning “(to you formal) don't guess correctly!”.
In Spanish, the Imperative Negative is known as "El Imperativo Negativo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | - | - |
| Tú | no aciertes | (to you) don't guess correctly! |
| Ella / Él / Usted | no acierte | (to you formal) don't guess correctly! |
| Nosotras / Nosotros | no acertemos | let's not guess correctly! |
| Vosotras / Vosotros | no acertéis | (to you plural) don't guess correctly! |
| Ellas / Ellos / Ustedes | no acierten | (to you plural formal) don't guess correctly! |
How it’s built: No plus the subjunctive present: no aciertes, no acierte, no acertemos, no acertéis, no acierten.
Letters in red show where a form differs from the regular pattern.
Acertar is an irregular Spanish verb. In the present tense: yo, tú, ella/él and ellas/ellos change e to ie (acierto, aciertas, acierta, aciertan); nosotros and vosotros are regular. It is also irregular in the present subjunctive (acierte).
In the present tense (presente), acertar is conjugated as: yo acierto, tú aciertas, él/ella/usted acierta, nosotros acertamos, vosotros acertáis, ellos/ellas/ustedes aciertan. 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.
In the preterite (pretérito indefinido), acertar is conjugated as: yo acerté, tú acertaste, él/ella/usted acertó, nosotros acertamos, vosotros acertasteis, ellos/ellas/ustedes acertaron. The preterite is used To talk about actions completed in the past, at a specific point in time.
In the imperfect (pretérito imperfecto), acertar is conjugated as: yo acertaba, tú acertabas, él/ella/usted acertaba, nosotros acertábamos, vosotros acertabais, ellos/ellas/ustedes acertaban. The imperfect is used To describe regular and repeated actions that happened in the past and descriptions of things you used to do.
In the future tense (futuro simple), acertar is conjugated as: yo acertaré, tú acertarás, él/ella/usted acertará, nosotros acertaremos, vosotros acertaréis, ellos/ellas/ustedes acertarán. The future tense is used To talk about something that will happen in the future.
In the present subjunctive (subjuntivo presente), acertar is conjugated as: yo acierte, tú aciertes, él/ella/usted acierte, nosotros acertemos, vosotros acertéis, ellos/ellas/ustedes acierten. 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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