impedir
to preventPresentewhat is going on now
Presente
Present — what is happening now, and what happens habitually
| yo | impidoI prevent | nosotros | impedimoswe prevent |
| tú | impidesyou prevent | vosotros | impedísyou all prevent |
| él/ella/Ud. | impidehe/she prevents | ellos/Uds. | impidenthey prevent |
Pretérito perfecto
Present perfect — have —ed; a past still touching now. Spain: today, this week. Latin America: mostly the indefinido instead
| yo | he impedidoI have prevented | nosotros | hemos impedidowe have prevented |
| tú | has impedidoyou have prevented | vosotros | habéis impedidoyou all have prevented |
| él/ella/Ud. | ha impedidohe/she has prevented | ellos/Uds. | han impedidothey have prevented |
Presente de subjuntivo
Present subjunctive — after que with wishes, doubt, emotion, ojalá
| yo | impida(that) I prevent | nosotros | impidamos(that) we prevent |
| tú | impidas(that) you prevent | vosotros | impidáis(that) you all prevent |
| él/ella/Ud. | impida(that) he/she prevents | ellos/Uds. | impidan(that) they prevent |
Perfecto de subjuntivo
Present perfect subjunctive — have —ed, under doubt or emotion: no creo que haya venido
| yo | haya impedido(that) I have prevented | nosotros | hayamos impedido(that) we have prevented |
| tú | hayas impedido(that) you have prevented | vosotros | hayáis impedido(that) you all have prevented |
| él/ella/Ud. | haya impedido(that) he/she has prevented | ellos/Uds. | hayan impedido(that) they have prevented |
Pasadowhat went on
Pretérito indefinido
Preterite — a finished past action — it started, it ended
| yo | impedíI prevented | nosotros | impedimoswe prevented |
| tú | impedisteyou prevented | vosotros | impedisteisyou all prevented |
| él/ella/Ud. | impidióhe/she prevented | ellos/Uds. | impidieronthey prevented |
Pretérito imperfecto
Imperfect — used to / was —ing; background, habits, descriptions
| yo | impedíaI used to prevent | nosotros | impedíamoswe used to prevent |
| tú | impedíasyou used to prevent | vosotros | impedíaisyou all used to prevent |
| él/ella/Ud. | impedíahe/she used to prevent | ellos/Uds. | impedíanthey used to prevent |
Pretérito pluscuamperfecto
Past perfect — had —ed; further back than another past event
| yo | había impedidoI had prevented | nosotros | habíamos impedidowe had prevented |
| tú | habías impedidoyou had prevented | vosotros | habíais impedidoyou all had prevented |
| él/ella/Ud. | había impedidohe/she had prevented | ellos/Uds. | habían impedidothey had prevented |
Imperfecto de subjuntivo (-ra)
Imperfect subjunctive — si clauses and past-tense wishes: si tuviera, quería que fuera
| yo | impidiera(that) I prevented | nosotros | impidiéramos(that) we prevented |
| tú | impidieras(that) you prevented | vosotros | impidierais(that) you all prevented |
| él/ella/Ud. | impidiera(that) he/she prevented | ellos/Uds. | impidieran(that) they prevented |
Imperfecto de subjuntivo (-se)
Imperfect subjunctive — the same tense, second form; commoner in Spain and in writing
| yo | impidiese(that) I prevented | nosotros | impidiésemos(that) we prevented |
| tú | impidieses(that) you prevented | vosotros | impidieseis(that) you all prevented |
| él/ella/Ud. | impidiese(that) he/she prevented | ellos/Uds. | impidiesen(that) they prevented |
Pluscuamperfecto de subjuntivo
Past perfect subjunctive — had —ed, hypothetically: si hubiera sabido
| yo | hubiera impedido(that) I had prevented | nosotros | hubiéramos impedido(that) we had prevented |
| tú | hubieras impedido(that) you had prevented | vosotros | hubierais impedido(that) you all had prevented |
| él/ella/Ud. | hubiera impedido(that) he/she had prevented | ellos/Uds. | hubieran impedido(that) they had prevented |
Pretérito anterior
Preterite perfect — had —ed, immediately before; literary, all but extinct
| yo | hube impedidoI had prevented | nosotros | hubimos impedidowe had prevented |
| tú | hubiste impedidoyou had prevented | vosotros | hubisteis impedidoyou all had prevented |
| él/ella/Ud. | hubo impedidohe/she had prevented | ellos/Uds. | hubieron impedidothey had prevented |
Futurowhat will or would go on
Futuro simple
Future — will — (spoken Spanish often prefers voy a + infinitivo)
| yo | impediréI will prevent | nosotros | impediremoswe will prevent |
| tú | impedirásyou will prevent | vosotros | impediréisyou all will prevent |
| él/ella/Ud. | impediráhe/she will prevent | ellos/Uds. | impediránthey will prevent |
Condicional simple
Conditional — would —; also softens a request into politeness
| yo | impediríaI would prevent | nosotros | impediríamoswe would prevent |
| tú | impediríasyou would prevent | vosotros | impediríaisyou all would prevent |
| él/ella/Ud. | impediríahe/she would prevent | ellos/Uds. | impediríanthey would prevent |
Futuro perfecto
Future perfect — will have —ed; done by some future point
| yo | habré impedidoI will have prevented | nosotros | habremos impedidowe will have prevented |
| tú | habrás impedidoyou will have prevented | vosotros | habréis impedidoyou all will have prevented |
| él/ella/Ud. | habrá impedidohe/she will have prevented | ellos/Uds. | habrán impedidothey will have prevented |
Condicional perfecto
Conditional perfect — would have —ed; the road not taken
| yo | habría impedidoI would have prevented | nosotros | habríamos impedidowe would have prevented |
| tú | habrías impedidoyou would have prevented | vosotros | habríais impedidoyou all would have prevented |
| él/ella/Ud. | habría impedidohe/she would have prevented | ellos/Uds. | habrían impedidothey would have prevented |
Futuro de subjuntivo
Future subjunctive — legal and proverbial only: adonde fueres, haz lo que vieres
| yo | impidiere(should) I prevent | nosotros | impidiéremos(should) we prevent |
| tú | impidieres(should) you prevent | vosotros | impidiereis(should) you all prevent |
| él/ella/Ud. | impidiere(should) he/she prevent | ellos/Uds. | impidieren(should) they prevent |
Imperativotelling someone to
Imperativo afirmativo
Imperative (do it) — orders and requests; there is no yo form
| yo | — | nosotros | impidamoslet's prevent |
| tú | impideprevent! | vosotros | impedidprevent! |
| él/ella/Ud. | impidaprevent! | ellos/Uds. | impidanprevent! |
Imperativo negativo
Imperative (don't) — no + subjunctive — never the affirmative form with no in front
| yo | — | nosotros | no impidamoslet's not prevent |
| tú | no impidasdon't prevent | vosotros | no impidáisdon't prevent |
| él/ella/Ud. | no impidadon't prevent | ellos/Uds. | no impidandon't prevent |
Red = the form breaks the regular pattern. Everything in black you could have worked out from the endings alone.