-ir verb irregular · spelling-change -cer/cir B1 · Intermediate

Conjugate introducir in Spanish

to introduce / to insert

introducir is an irregular -ir verb ranked #489 among the most common Spanish verbs. For example: "Necesito introducir esto." (I need to introduce / to insert this.). Use the tables below for full conjugation across all 7 tenses.

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⚡ Irregular verb — introducir (spelling-change -cer/cir) does not follow standard -ir 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 introduzco *
introduces
él/ella/Ud. introduce
nosotros introducimos
vosotros introducís
ellos/ellas/Uds. introducen
Example

Yo introduzco todos los días.

I introduce / to insert every day.

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

Pronoun Conjugation
yo introduje *
introdujiste *
él/ella/Ud. introdujo *
nosotros introdujimos *
vosotros introdujisteis *
ellos/ellas/Uds. introdujeron *
Example

Ayer yo introduje.

Yesterday I introduce / to insert.

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

Pronoun Conjugation
yo introducía
introducías
él/ella/Ud. introducía
nosotros introducíamos
vosotros introducíais
ellos/ellas/Uds. introducían
Example

Antes yo introducía con frecuencia.

Before, I used to introduce / to insert often.

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

Pronoun Conjugation
yo introduciré
introducirás
él/ella/Ud. introducirá
nosotros introduciremos
vosotros introduciréis
ellos/ellas/Uds. introducirán
Example

Mañana yo introduciré.

Tomorrow I will introduce / to insert.

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

Pronoun Conjugation
yo introduciría
introducirías
él/ella/Ud. introduciría
nosotros introduciríamos
vosotros introduciríais
ellos/ellas/Uds. introducirían
Example

Si pudiera, yo introduciría.

If I could, I would introduce / to insert.

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

Pronoun Conjugation
yo introduzca *
introduzcas *
él/ella/Ud. introduzca *
nosotros introduzcamos *
vosotros introduzcáis *
ellos/ellas/Uds. introduzcan *
Example

Espero que tú introduzcas.

I hope that you introduce / to insert.

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

Pronoun Conjugation
yo -
introduce
él/ella/Ud. introduca
nosotros introducamos
vosotros introducid
ellos/ellas/Uds. introducan
Example

¡Introduce!

Introduce / to insert!

Test yourself

Type the correct conjugation for each prompt.

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Example sentences

Common phrases with introducir

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