Ella Verbsasustar to frighten, to scare Regular AR Verb
At a glance: Asustar (to frighten, to scare) is a regular -AR verb in Spanish. In the present tense: asusto, asustas, asusta, asustamos, asustáis, asustan. Because it is fully regular, its endings apply directly to hundreds of other -AR verbs.

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The Indicative Present of asustar 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, “asusto”, meaning “I frighten”.
In Spanish, the Indicative Present is known as "El Presente".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | asusto | I frighten |
| Tú | asustas | you frighten |
| Ella / Él / Usted | asusta | s/he frightens |
| Nosotras / Nosotros | asustamos | we frighten |
| Vosotras / Vosotros | asustáis | you (plural) frighten |
| Ellas / Ellos / Ustedes | asustan | they frighten |
How it’s built: Regular: stem asust- plus the -ar endings.
The Indicative Preterite of asustar is used to talk about actions completed in the past, at a specific point in time. For example, “asusté”, meaning “I frightened”.
In Spanish, the Indicative Preterite is known as "El Pretérito Indefinido".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | asusté | I frightened |
| Tú | asustaste | you frightened |
| Ella / Él / Usted | asustó | s/he frightened |
| Nosotras / Nosotros | asustamos | we frightened |
| Vosotras / Vosotros | asustasteis | you (plural) frightened |
| Ellas / Ellos / Ustedes | asustaron | they frightened |
How it’s built: Regular: stem asust- plus the -ar endings.
The Indicative Imperfect of asustar is used to describe regular and repeated actions that happened in the past and descriptions of things you used to do. For example, “asustaba”, meaning “I used to frighten”.
In Spanish, the Indicative Imperfect is known as "El Pretérito Imperfecto".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | asustaba | I used to frighten |
| Tú | asustabas | you used to frighten |
| Ella / Él / Usted | asustaba | s/he used to frighten |
| Nosotras / Nosotros | asustábamos | we used to frighten |
| Vosotras / Vosotros | asustabais | you (plural) used to frighten |
| Ellas / Ellos / Ustedes | asustaban | they used to frighten |
How it’s built: Regular: stem asust- plus the -ar endings.
The Indicative Present Continuous of asustar is used to talk about something that is happening continuously or right now. For example, “estoy asustando”, meaning “I am frightening”.
In Spanish, the Indicative Present Continuous is known as "El Presente Progresivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | estoy asustando | I am frightening |
| Tú | estás asustando | you are frightening |
| Ella / Él / Usted | está asustando | s/he is frightening |
| Nosotras / Nosotros | estamos asustando | we are frightening |
| Vosotras / Vosotros | estáis asustando | you (plural) are frightening |
| Ellas / Ellos / Ustedes | están asustando | they are frightening |
How it’s built: Estar in the present (estoy, estás, está, estamos, estáis, están) plus the gerund asustando.
The Indicative Informal Future of asustar is used to talk about something that will happen in the future, especially in the near future. For example, “voy a asustar”, meaning “I am going to frighten”.
In Spanish, the Indicative Informal Future is known as "El Futuro Próximo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | voy a asustar | I am going to frighten |
| Tú | vas a asustar | you are going to frighten |
| Ella / Él / Usted | va a asustar | s/he is going to frighten |
| Nosotras / Nosotros | vamos a asustar | we are going to frighten |
| Vosotras / Vosotros | vais a asustar | you (plural) are going to frighten |
| Ellas / Ellos / Ustedes | van a asustar | they are going to frighten |
How it’s built: Ir in the present (voy, vas, va, vamos, vais, van), then a, then the infinitive asustar.
The Indicative Future of asustar is used to talk about something that will happen in the future. For example, “asustaré”, meaning “I will frighten”.
In Spanish, the Indicative Future is known as "El Futuro Simple".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | asustaré | I will frighten |
| Tú | asustarás | you will frighten |
| Ella / Él / Usted | asustará | s/he will frighten |
| Nosotras / Nosotros | asustaremos | we will frighten |
| Vosotras / Vosotros | asustaréis | you (plural) will frighten |
| Ellas / Ellos / Ustedes | asustarán | they will frighten |
How it’s built: Regular: the infinitive asustar plus the future endings.
The Indicative Conditional of asustar is used to talk about something that may happen in the future, hypothesis and probabilities. For example, “asustaría”, meaning “I would frighten”.
In Spanish, the Indicative Conditional is known as "El Condicional Simple".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | asustaría | I would frighten |
| Tú | asustarías | you would frighten |
| Ella / Él / Usted | asustaría | s/he would frighten |
| Nosotras / Nosotros | asustaríamos | we would frighten |
| Vosotras / Vosotros | asustaríais | you (plural) would frighten |
| Ellas / Ellos / Ustedes | asustarían | they would frighten |
How it’s built: Regular: the infinitive asustar plus the conditional endings.
The Indicative Present Perfect of asustar 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 asustado”, meaning “I have frightened”.
In Spanish, the Indicative Present Perfect is known as "El Pretérito Perfecto".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | he asustado | I have frightened |
| Tú | has asustado | you have frightened |
| Ella / Él / Usted | ha asustado | s/he has frightened |
| Nosotras / Nosotros | hemos asustado | we have frightened |
| Vosotras / Vosotros | habéis asustado | you (plural) have frightened |
| Ellas / Ellos / Ustedes | han asustado | they have frightened |
How it’s built: Haber in the present (he, has, ha, hemos, habéis, han) plus the past participle asustado.
The Indicative Past Perfect of asustar is used to talk about actions that happened before another action in the past. For example, “había asustado”, meaning “I had frightened”.
In Spanish, the Indicative Past Perfect is known as "El Pretérito Pluscuamperfecto".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | había asustado | I had frightened |
| Tú | habías asustado | you had frightened |
| Ella / Él / Usted | había asustado | s/he had frightened |
| Nosotras / Nosotros | habíamos asustado | we had frightened |
| Vosotras / Vosotros | habíais asustado | you (plural) had frightened |
| Ellas / Ellos / Ustedes | habían asustado | they had frightened |
How it’s built: Haber in the imperfect (había, habías, había, habíamos, habíais, habían) plus the past participle asustado.
The Indicative Future Perfect of asustar is used to talk about something that will have happened in the future after something else has already happened. For example, “habré asustado”, meaning “I will have frightened”.
In Spanish, the Indicative Future Perfect is known as "El Futuro Perfecto".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | habré asustado | I will have frightened |
| Tú | habrás asustado | you will have frightened |
| Ella / Él / Usted | habrá asustado | s/he will have frightened |
| Nosotras / Nosotros | habremos asustado | we will have frightened |
| Vosotras / Vosotros | habréis asustado | you (plural) will have frightened |
| Ellas / Ellos / Ustedes | habrán asustado | they will have frightened |
How it’s built: Haber in the future (habré, habrás, habrá, habremos, habréis, habrán) plus the past participle asustado.
The Indicative Conditional Perfect of asustar is used to talk about something that would have happened in the past but didn’t due to another action. For example, “habría asustado”, meaning “I would have frightened”.
In Spanish, the Indicative Conditional Perfect is known as "El Condicional Perfecto".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | habría asustado | I would have frightened |
| Tú | habrías asustado | you would have frightened |
| Ella / Él / Usted | habría asustado | s/he would have frightened |
| Nosotras / Nosotros | habríamos asustado | we would have frightened |
| Vosotras / Vosotros | habríais asustado | you (plural) would have frightened |
| Ellas / Ellos / Ustedes | habrían asustado | they would have frightened |
How it’s built: Haber in the conditional (habría, habrías, habría, habríamos, habríais, habrían) plus the past participle asustado.
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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, “asuste”, meaning “I frighten”.
In Spanish, the Subjunctive Present is known as "El Presente de Subjuntivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | asuste | I frighten |
| Tú | asustes | you frighten |
| Ella / Él / Usted | asuste | s/he frightens |
| Nosotras / Nosotros | asustemos | we frighten |
| Vosotras / Vosotros | asustéis | you (plural) frighten |
| Ellas / Ellos / Ustedes | asusten | they frighten |
How it’s built: Regular: stem asust- plus the -ar subjunctive endings.
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, “asustara”, meaning “I frightened”.
In Spanish, the Subjunctive Imperfect is known as "El Imperfecto Subjuntivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | asustara | I frightened |
| Tú | asustaras | you frightened |
| Ella / Él / Usted | asustara | s/he frightened |
| Nosotras / Nosotros | asustáramos | we frightened |
| Vosotras / Vosotros | asustarais | you (plural) frightened |
| Ellas / Ellos / Ustedes | asustaran | they frightened |
How it’s built: Regular: the ellas/ellos preterite, asustaron, without -ron, plus the -ra endings; nosotros adds an accent (asustáramos).
The Subjunctive Future is used to speak about hypothetical situations, and actions/events that may happen in the future. For example, “asustare”, meaning “I will frighten”.
In Spanish, the Subjunctive Future is known as "El Futuro de Subjuntivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | asustare | I will frighten |
| Tú | asustares | you will frighten |
| Ella / Él / Usted | asustare | s/he will frighten |
| Nosotras / Nosotros | asustáremos | we will frighten |
| Vosotras / Vosotros | asustareis | you (plural) will frighten |
| Ellas / Ellos / Ustedes | asustaren | they will frighten |
How it’s built: Regular: the ellas/ellos preterite, asustaron, without -ron, plus the -re endings; nosotros adds an accent (asustáremos).
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 asustado”, meaning “I have frightened”.
In Spanish, the Subjunctive Present Perfect is known as "El Pretérito Perfecto de Subjuntivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | haya asustado | I have frightened |
| Tú | hayas asustado | you have frightened |
| Ella / Él / Usted | haya asustado | s/he has frightened |
| Nosotras / Nosotros | hayamos asustado | we have frightened |
| Vosotras / Vosotros | hayáis asustado | you (plural) have frightened |
| Ellas / Ellos / Ustedes | hayan asustado | they have frightened |
How it’s built: Haber in the subjunctive present (haya, hayas, haya, hayamos, hayáis, hayan) plus the past participle asustado.
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 asustado”, meaning “I had frightened”.
In Spanish, the Subjunctive Past Perfect is known as "El Pretérito Pluscuamperfecto de Subjuntivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | hubiera asustado | I had frightened |
| Tú | hubieras asustado | you had frightened |
| Ella / Él / Usted | hubiera asustado | s/he had frightened |
| Nosotras / Nosotros | hubiéramos asustado | we had frightened |
| Vosotras / Vosotros | hubierais asustado | you (plural) had frightened |
| Ellas / Ellos / Ustedes | hubieran asustado | they had frightened |
How it’s built: Haber in the subjunctive imperfect (hubiera, hubieras, hubiera, hubiéramos, hubierais, hubieran) plus the past participle asustado.
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 asustado”, meaning “I will have frightened”.
In Spanish, the Subjunctive Future Perfect is known as "El Futuro Perfecto de Subjuntivo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | hubiere asustado | I will have frightened |
| Tú | hubieres asustado | you will have frightened |
| Ella / Él / Usted | hubiere asustado | s/he will have frightened |
| Nosotras / Nosotros | hubiéremos asustado | we will have frightened |
| Vosotras / Vosotros | hubiereis asustado | you (plural) will have frightened |
| Ellas / Ellos / Ustedes | hubieren asustado | they will have frightened |
How it’s built: Haber in the subjunctive future (hubiere, hubieres, hubiere, hubiéremos, hubiereis, hubieren) plus the past participle asustado.
The Imperative Affirmative is used to give orders and commands, to tell someone to do something. For example, “asuste”, meaning “(to you formal) frighten!”.
In Spanish, the Imperative Affirmative is known as "El Imperativo Afirmativo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | - | - |
| Tú | asusta | (to you) frighten! |
| Ella / Él / Usted | asuste | (to you formal) frighten! |
| Nosotras / Nosotros | asustemos | let's frighten! |
| Vosotras / Vosotros | asustad | (to you plural) frighten! |
| Ellas / Ellos / Ustedes | asusten | (to you plural formal) frighten! |
How it’s built: Tú takes the ella/él present (asusta); usted, nosotros and ustedes take the subjunctive present (asuste, asustemos, asusten); vosotros swaps the final r of the infinitive for a d (asustad).
The Imperative Negative is used to give orders and commands, telling someone not to do something. For example, “no asuste”, meaning “(to you formal) don't frighten!”.
In Spanish, the Imperative Negative is known as "El Imperativo Negativo".
| Pronoun | Spanish | English |
|---|---|---|
| Yo | - | - |
| Tú | no asustes | (to you) don't frighten! |
| Ella / Él / Usted | no asuste | (to you formal) don't frighten! |
| Nosotras / Nosotros | no asustemos | let's not frighten! |
| Vosotras / Vosotros | no asustéis | (to you plural) don't frighten! |
| Ellas / Ellos / Ustedes | no asusten | (to you plural formal) don't frighten! |
How it’s built: No plus the subjunctive present: no asustes, no asuste, no asustemos, no asustéis, no asusten.
Asustar is a fully regular -AR verb. It follows the standard -AR conjugation pattern in every tense and mood without any stem changes, spelling changes, or irregular forms. This makes it a model verb for learning the -AR conjugation system.
In the present tense (presente), asustar is conjugated as: yo asusto, tú asustas, él/ella/usted asusta, nosotros asustamos, vosotros asustáis, ellos/ellas/ustedes asustan. 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), asustar is conjugated as: yo asusté, tú asustaste, él/ella/usted asustó, nosotros asustamos, vosotros asustasteis, ellos/ellas/ustedes asustaron. The preterite is used To talk about actions completed in the past, at a specific point in time.
In the imperfect (pretérito imperfecto), asustar is conjugated as: yo asustaba, tú asustabas, él/ella/usted asustaba, nosotros asustábamos, vosotros asustabais, ellos/ellas/ustedes asustaban. 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), asustar is conjugated as: yo asustaré, tú asustarás, él/ella/usted asustará, nosotros asustaremos, vosotros asustaréis, ellos/ellas/ustedes asustarán. The future tense is used To talk about something that will happen in the future.
In the present subjunctive (subjuntivo presente), asustar is conjugated as: yo asuste, tú asustes, él/ella/usted asuste, nosotros asustemos, vosotros asustéis, ellos/ellas/ustedes asusten. 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.
Asustar means "to frighten, to scare" in the standard sense. Asustarse is the reflexive form, which typically means the action is done to oneself or to each other. The reflexive pronoun (me, te, se, nos, os, se) is added before the conjugated verb. For example, "no se asustan" instead of "no asustan".
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