-ar verb irregular · stem-change o>ue C1 · Advanced

Conjugate reforzar in Spanish

to reinforce, to strengthen

reforzar is an irregular -ar verb ranked #2341 among the most common Spanish verbs. For example: "Reforzaron la seguridad del aeropuerto." (They reinforced the airport security.). Use the tables below for full conjugation across all 7 tenses.

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⚡ Irregular verb — reforzar (stem-change o>ue) does not follow standard -ar patterns. Pay close attention to the stems in each tense.

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

Pronoun Conjugation
yo refuerzo *
refuerzas *
él/ella/Ud. refuerza *
nosotros reforzamos
vosotros reforzáis
ellos/ellas/Uds. refuerzan *
Example

Yo refuerzo todos los días.

I reinforce, to strengthen every day.

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

Pronoun Conjugation
yo reforcé *
reforzaste
él/ella/Ud. reforzó
nosotros reforzamos
vosotros reforzasteis
ellos/ellas/Uds. reforzaron
Example

Reforzaron la seguridad del aeropuerto.

They reinforced the airport security.

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

Pronoun Conjugation
yo reforzaba
reforzabas
él/ella/Ud. reforzaba
nosotros reforzábamos
vosotros reforzabais
ellos/ellas/Uds. reforzaban
Example

Antes yo reforzaba con frecuencia.

Before, I used to reinforce, to strengthen often.

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

Pronoun Conjugation
yo reforzaré
reforzarás
él/ella/Ud. reforzará
nosotros reforzaremos
vosotros reforzaréis
ellos/ellas/Uds. reforzarán
Example

Mañana yo reforzaré.

Tomorrow I will reinforce, to strengthen.

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

Pronoun Conjugation
yo reforzaría
reforzarías
él/ella/Ud. reforzaría
nosotros reforzaríamos
vosotros reforzaríais
ellos/ellas/Uds. reforzarían
Example

Si pudiera, yo reforzaría.

If I could, I would reinforce, to strengthen.

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

Pronoun Conjugation
yo refuerce *
refuerces *
él/ella/Ud. refuerce *
nosotros reforcemos *
vosotros reforcéis *
ellos/ellas/Uds. refuercen *
Example

Espero que tú refuerces.

I hope that you reinforce, to strengthen.

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

Pronoun Conjugation
yo -
refuerza *
él/ella/Ud. refuerce *
nosotros reforcemos *
vosotros reforzad
ellos/ellas/Uds. refuercen *
Example

¡Refuerza!

Reinforce, to strengthen!

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Type the correct conjugation for each prompt.

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Example sentences

Common phrases with reforzar

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