-ar verb C1 · Advanced

Conjugate proliferar in Spanish

to proliferate

proliferar is a regular -ar verb ranked #1765 among the most common Spanish verbs. For example: "Las algas proliferan en aguas cálidas." (Algae proliferate in warm waters.). Use the tables below for full conjugation across all 7 tenses.

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Describes current actions, habits, and general truths. The most frequently used tense — master it first.

Pronoun Conjugation
yo prolifero
proliferas
él/ella/Ud. prolifera
nosotros proliferamos
vosotros proliferáis
ellos/ellas/Uds. proliferan
Example

Las algas proliferan en aguas cálidas.

Algae proliferate in warm waters.

Describes completed past actions with a clear start and end. Key signals: ayer, el lunes pasado, de repente.

Pronoun Conjugation
yo proliferé
proliferaste
él/ella/Ud. proliferó
nosotros proliferamos
vosotros proliferasteis
ellos/ellas/Uds. proliferaron
Example

Ayer yo proliferé.

Yesterday I proliferate.

Describes habitual past actions, background context, and ongoing states. Key signals: siempre, normalmente, cuando era niño.

Pronoun Conjugation
yo proliferaba
proliferabas
él/ella/Ud. proliferaba
nosotros proliferábamos
vosotros proliferabais
ellos/ellas/Uds. proliferaban
Example

Antes yo proliferaba con frecuencia.

Before, I used to proliferate often.

Describes future events and predictions. In everyday speech, ir a + infinitive is often preferred for planned events.

Pronoun Conjugation
yo proliferaré
proliferarás
él/ella/Ud. proliferará
nosotros proliferaremos
vosotros proliferaréis
ellos/ellas/Uds. proliferarán
Example

Si no actuamos, las plagas proliferarán sin control.

If we don't act, the pests will proliferate out of control.

Expresses what would happen under certain conditions — equivalent to "would" in English. Also used for polite requests.

Pronoun Conjugation
yo proliferaría
proliferarías
él/ella/Ud. proliferaría
nosotros proliferaríamos
vosotros proliferaríais
ellos/ellas/Uds. proliferarían
Example

Si pudiera, yo proliferaría.

If I could, I would proliferate.

Used in clauses expressing wishes, doubt, emotion, or uncertainty — typically after que. Triggers: querer, esperar, dudar, ojalá.

Pronoun Conjugation
yo prolifere
proliferes
él/ella/Ud. prolifere
nosotros proliferemos
vosotros proliferéis
ellos/ellas/Uds. proliferen
Example

Espero que tú proliferes.

I hope that you proliferate.

Used to give commands and direct requests. Affirmative and negative forms differ significantly in Spanish.

Pronoun Conjugation
yo -
prolifera
él/ella/Ud. prolifere
nosotros proliferemos
vosotros proliferad
ellos/ellas/Uds. proliferen
Example

¡Prolifera!

Proliferate!

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Example sentences

Common phrases with proliferar

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