Fastidiar Conjugation in Spanish

fastidiar means «to annoy». It is a regular -ar verb verb, so the tables below show you exactly how it behaves in every tense. On this page you will find the full conjugation of fastidiar in all thirteen tenses, notes on when to use each one, example sentences, the mistakes learners make most often, a ten-question quiz and answers to the questions students ask about this verb. For example: «Yo fastidio todos los días» — I annoy every day.

Quick facts

  • Infinitive: fastidiar
  • English: to annoy
  • Verb type: regular -ar verb
  • Ending: -ar
  • Gerund: fastidiando
  • Past participle: fastidiado
  • Auxiliary verb: haber (all perfect tenses are formed with haber + fastidiado)

Pronunciation is not listed on this page: the verified tables do not include IPA for fastidiar, so no pronunciation is given rather than an invented one.

Full conjugation tables

Every form below comes from the verified conjugation tables for fastidiar. The imperfect subjunctive is shown in its -ra forms; the -se forms use the same stem.

Gerund: fastidiando · Past participle: fastidiado

Present Indicative

Person Form
yo fastidio
tú fastidias
él/ella/Ud. fastidia
nosotros/as fastidiamos
vosotros/as fastidiáis
ellos/ellas/Uds. fastidian

Use the present of fastidiar for things that happen regularly and for things that are true in general. The yo form fastidio is the anchor of the table: the other persons follow the regular -ar endings from it. When you talk about yourself right now, this is the form you need.

Preterite

Person Form
yo fastidié
tú fastidiaste
él/ella/Ud. fastidió
nosotros/as fastidiamos
vosotros/as fastidiasteis
ellos/ellas/Uds. fastidiaron

Use the preterite of fastidiar for a single finished event: something that happened once and is over. The yo form is fastidié. If you can put a finished time expression with it — ayer, la semana pasada, anoche — the preterite is usually right.

Imperfect

Person Form
yo fastidiaba
tú fastidiabas
él/ella/Ud. fastidiaba
nosotros/as fastidiábamos
vosotros/as fastidiabais
ellos/ellas/Uds. fastidiaban

Use the imperfect of fastidiar for what used to happen and for what was going on when something else happened. The yo form is fastidiaba. If the action has no clear beginning or end in the story, the imperfect is the right choice.

Future

Person Form
yo fastidiaré
tú fastidiarás
él/ella/Ud. fastidiará
nosotros/as fastidiaremos
vosotros/as fastidiaréis
ellos/ellas/Uds. fastidiarán

Use the future of fastidiar for plans, promises and predictions. The yo form is fastidiaré, built on the infinitive plus the future endings. For a firm plan, the future sounds more formal than ir a + infinitive; for a casual plan, either works.

Conditional

Person Form
yo fastidiaría
tú fastidiarías
él/ella/Ud. fastidiaría
nosotros/as fastidiaríamos
vosotros/as fastidiaríais
ellos/ellas/Uds. fastidiarían

Use the conditional of fastidiar for hypothetical situations and for softening requests. The yo form is fastidiaría. It appears after si-clauses with the imperfect subjunctive and on its own for polite suggestions.

Present Perfect

Person Form
yo he fastidiado
tú has fastidiado
él/ella/Ud. ha fastidiado
nosotros/as hemos fastidiado
vosotros/as habéis fastidiado
ellos/ellas/Uds. han fastidiado

Use the present perfect of fastidiar for recent events with present relevance. The yo form is he fastidiado — haber in the present plus fastidiado. Time expressions like hoy, esta semana and últimamente are its natural partners.

Pluperfect

Person Form
yo había fastidiado
tú habías fastidiado
él/ella/Ud. había fastidiado
nosotros/as habíamos fastidiado
vosotros/as habíais fastidiado
ellos/ellas/Uds. habían fastidiado

Use the pluperfect of fastidiar when you need two layers of past: one event already finished before another past event began. The yo form is había fastidiado. It is the tense of «had already done».

Future Perfect

Person Form
yo habré fastidiado
tú habrás fastidiado
él/ella/Ud. habrá fastidiado
nosotros/as habremos fastidiado
vosotros/as habréis fastidiado
ellos/ellas/Uds. habrán fastidiado

Use the future perfect of fastidiar to say that something will be finished by a future moment. The yo form is habré fastidiado. It pairs naturally with deadlines: para mañana, para el viernes, para entonces.

Conditional Perfect

Person Form
yo habría fastidiado
tú habrías fastidiado
él/ella/Ud. habría fastidiado
nosotros/as habríamos fastidiado
vosotros/as habríais fastidiado
ellos/ellas/Uds. habrían fastidiado

Use the conditional perfect of fastidiar for the past that did not happen: what would have been done with more time or a different choice. The yo form is habría fastidiado. It follows si-clauses with the pluperfect subjunctive.

Present Subjunctive

Person Form
yo fastidie
tú fastidies
él/ella/Ud. fastidie
nosotros/as fastidiemos
vosotros/as fastidiéis
ellos/ellas/Uds. fastidien

Use the present subjunctive of fastidiar when the main clause expresses a wish, a doubt, an emotion or an impersonal judgement. The yo form is fastidie. After espero que, ojalá que and no creo que, the subjunctive is required, not optional.

Imperfect Subjunctive (-ra forms)

Person Form
yo fastidiara
tú fastidiaras
él/ella/Ud. fastidiara
nosotros/as fastidiáramos
vosotros/as fastidiarais
ellos/ellas/Uds. fastidiaran

Use the imperfect subjunctive of fastidiar after past-tense wishes and doubts, and in si-clauses that set up a hypothetical present. The yo form is fastidiara. It is built on the third-person plural preterite stem, which is why it looks different from the present subjunctive.

Imperative — Affirmative

Person Form
tú fastidia
él/ella/Ud. fastidie
nosotros/as fastidiemos
vosotros/as fastidiad
ellos/ellas/Uds. fastidien

There is no yo form in the imperative — you cannot command yourself.

Use the affirmative imperative of fastidiar to tell someone to do something: instructions, invitations and requests. The tú form is fastidia. For a polite command, use the usted form fastidie instead of the tú form.

Imperative — Negative

Person Form
tú fastidies
él/ella/Ud. fastidie
nosotros/as fastidiemos
vosotros/as fastidiéis
ellos/ellas/Uds. fastidien

There is no yo form in the imperative — you cannot command yourself.

Use the negative imperative of fastidiar to forbid or to warn: «¡No fastidies!». The tú form is fastidies, taken from the present subjunctive. The word no always comes first, and the form never changes for emphasis.

Example sentences

  1. Yo fastidio todos los días. — I annoy every day.
  2. Ayer yo fastidié por la tarde. — Yesterday I annoyed in the afternoon.
  3. Antes, yo fastidiaba todos los días. — In the past, I used to annoy every day.
  4. Mañana yo fastidiaré sin falta. — Tomorrow I will annoy without fail.
  5. Si tuviera más tiempo, yo fastidiaría ahora mismo. — If I had more time, I would annoy right now.
  6. Hoy yo he fastidiado dos veces. — Today I have annoyed twice.
  7. Espero que tú fastidies pronto. — I hope You annoy soon.
  8. Si yo fastidiara, todo sería distinto. — If I annoyed, everything would be different.
  9. Ahora mismo yo estoy fastidiando. — Right now I am annoying.
  10. ¡fastidia, por favor! — Annoy, please!

Common mistakes

1. Using the imperfect for a finished event

Wrong: Ayer yo fastidiaba.

Right: Ayer yo fastidié.

Yesterday's finished action needs the preterite, fastidié. The imperfect fastidiaba describes what used to happen or what was going on, not a single completed event.

2. Using the indicative after a subjunctive trigger

Wrong: Espero que tú fastidias.

Right: Espero que tú fastidies.

After espero que, Spanish requires the subjunctive: fastidies, not the indicative fastidias. Wishes, hopes and doubts all trigger this change.

3. Using the affirmative imperative after no

Wrong: No fastidia.

Right: No fastidies.

Negative commands use the subjunctive-based forms: no fastidies. The affirmative fastidia can never follow no.

4. Using the infinitive instead of a conjugated form

Wrong: Yo fastidiar todos los días.

Right: Yo fastidio todos los días.

The infinitive fastidiar names the action; it never works as the main verb of a sentence. Conjugate it for the person: yo fastidio.

5. Confusing the gerund with the past participle

Wrong: He fastidiando.

Right: He fastidiado.

The perfect tenses use haber plus the past participle: he fastidiado. The gerund fastidiando goes with estar for actions in progress («Estoy fastidiando»), never with haber.

Quiz

Test yourself on the forms above. Choose the correct answer, then check the key below.

1. What is the vosotros/as form of fastidiar in the present indicative?

- (a) fastidio
- (b) fastidias
- (c) fastidiáis
- (d) fastidia

2. What is the ellos/ellas/Uds. form of fastidiar in the preterite?

- (a) fastidiaron
- (b) fastidiaste
- (c) fastidió
- (d) fastidié

3. What is the yo form of fastidiar in the imperfect?

- (a) fastidiaba
- (b) fastidiabas
- (c) fastidiábamos
- (d) fastidiaba

4. What is the tú form of fastidiar in the future?

- (a) fastidiaré
- (b) fastidiará
- (c) fastidiaremos
- (d) fastidiarás

5. What is the él/ella/Ud. form of fastidiar in the conditional?

- (a) fastidiaría
- (b) fastidiaríamos
- (c) fastidiaría
- (d) fastidiarías

6. What is the nosotros/as form of fastidiar in the present perfect?

- (a) hemos fastidiado
- (b) ha fastidiado
- (c) he fastidiado
- (d) has fastidiado

7. What is the vosotros/as form of fastidiar in the present subjunctive?

- (a) fastidies
- (b) fastidie
- (c) fastidiéis
- (d) fastidie

8. What is the ellos/ellas/Uds. form of fastidiar in the imperfect subjunctive (-ra forms)?

- (a) fastidiaras
- (b) fastidiaran
- (c) fastidiara
- (d) fastidiara

9. What is the gerund of fastidiar?

- (a) fastidiado
- (b) fastidiar
- (c) fastidiando
- (d) fastidio

10. What is the past participle of fastidiar?

- (a) fastidiado
- (b) fastidiando
- (c) fastidié
- (d) fastidiar

Answer key

1. (c) — In the present indicative, the vosotros/as form of fastidiar is fastidiáis. The other options are the same tense but different persons. 2. (a) — In the preterite, the ellos/ellas/Uds. form of fastidiar is fastidiaron. The other options are the same tense but different persons. 3. (a) — In the imperfect, the yo form of fastidiar is fastidiaba. The other options are the same tense but different persons. 4. (d) — In the future, the tú form of fastidiar is fastidiarás. The other options are the same tense but different persons. 5. (a) — In the conditional, the él/ella/Ud. form of fastidiar is fastidiaría. The other options are the same tense but different persons. 6. (a) — In the present perfect, the nosotros/as form of fastidiar is hemos fastidiado. The other options are the same tense but different persons. 7. (c) — In the present subjunctive, the vosotros/as form of fastidiar is fastidiéis. The other options are the same tense but different persons. 8. (b) — In the imperfect subjunctive (-ra forms), the ellos/ellas/Uds. form of fastidiar is fastidiaran. The other options are the same tense but different persons. 9. (c) — The gerund of fastidiar is fastidiando. It is used with estar for the progressive: «Estoy fastidiando». 10. (a) — The past participle of fastidiar is fastidiado. It follows haber in all the perfect tenses: «he fastidiado».

Frequently asked questions

Is fastidiar regular or irregular?

Yes — fastidiar is a regular -ar verb. Learn the endings once and they work in every tense, with the stem fastidi unchanged throughout.

What are the gerund and past participle of fastidiar?

The gerund is fastidiando and the past participle is fastidiado. Use the gerund with estar for actions in progress («Estoy fastidiando») and the participle with haber for the perfect tenses («he fastidiado»).

How do I say «I annoy» in Spanish?

Say «Yo fastidio todos los días». That is the yo form of the present tense, the form you need for talking about yourself right now.

What is the difference between the preterite and the imperfect of fastidiar?

Use the preterite (fastidié) for a single finished event and the imperfect (fastidiaba) for habits and background. «Ayer yo fastidié» reports something that happened and ended; «Antes, yo fastidiaba» describes what used to happen.

When do I use the subjunctive with fastidiar?

Use the subjunctive after wishes, doubts, emotions and impersonal expressions — for example «Espero que tú fastidies». The trigger sits in the main clause; once it is there, the subjunctive form is required, not a stylistic choice.

How do I use fastidiar in the present perfect?

Put haber in the present before the past participle: «Hoy yo he fastidiado». The participle fastidiado never changes for person — only haber changes — so once you know the participle, the whole perfect tense follows.

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