Irregular Preterite Verbs: Past Tense Spanish Made Simple

Irregular preterite verbs tend to scare Spanish learners for one simple reason: they don’t seem to follow the rules. After spending time learning neat, predictable conjugation patterns, suddenly you’re expected to remember forms like tuve, hice, dije, and estuve.

But here’s the thing: not every irregular verb is completely irregular. Many belong to families that share the same stem changes or endings, so learning one helps you learn several others at the same time.

Let’s back up a bit about the most important Spanish past tenses.

In the indicative mood, there are two ways to speak about the past tense: the preterite (aka simple past) tense and the imperfect tense.

The Spanish preterite tense is used to describe actions completed at a specific point in the past; whereas the imperfect is used to describe habitual or continuous actions in the past with no specific beginning or end. For more on preterite vs imperfect tense, read here.

In this guide, you’ll learn the main groups of irregular preterite verbs, the patterns they follow, and the exceptions you’ll simply need to memorize.

How To Conjugate Irregular Preterite Verbs In Spanish

All verbs listed in the post can be considered irregular.

However, you’ll see that some verbs only require subtle changes, others undergo drastic spelling changes and some, quite frankly, do not abide by any rules whatsoever.

Although every verb in this guide is irregular, not all irregularities are equally difficult. Many verbs actually follow shared patterns, making them much easier to learn once you group them together.

We’ll organize the most common irregular preterite verbs into five categories:

• Verbs that require significant changes: Ser, Ir, Dar, Hacer, Ver
• Verbs that require a stem change, but use regular endings
• Verbs ending in -ir that require a stem change
• Verbs ending in -ucir
• Verbs that are irregular in the “yo” form

1) Verbs that require significant changes

These are the most unpredictable irregular preterite verbs in Spanish. Unlike the other groups we’ll see later, these verbs don’t follow a shared pattern, so the best approach is simply to memorize their conjugations.

Fortunately, they’re also among the most common verbs in everyday Spanish, so you’ll encounter them constantly.

• Ser (to be)
• Ir (to go)
• Dar (to give)
• Hacer (to do)
• Ver (to see)

These five verbs are probably the most commonly used irregular verbs in the preterite, and so it’s important to memorize the conjugations by heart.

Let’s dive in.

Subject	Verb: Ser (to be)	English Equivalent
Yo	fui	I was
Tú	fuiste	You were
Él/Ella/Usted	fue	He/She was
Nosotros/Nosotras	fuimos	We were
Ellos/Ellas/Ustedes	fueron	They were

 

Subject	Verb: Ir (to go)	English Equivalent
Yo	fui	I went
Tú	fuiste	You went
Él/Ella/Usted	fue	He/She went
Nosotros/Nosotras	fuimos	We went
Ellos/ellas/Ustedes	fueron	They went

Sidenote:

One of the first things you’ll notice is that ser and ir share exactly the same preterite conjugations:

• fui
• fuiste
• fue
• fuimos
• fueron

So how do you know which verb is being used?

The answer is context. Ir usually describes movement or a destination, often followed by a” (or alternatively “para”) or another location. Ser, on the other hand, describes identity, characteristics, or states in the past.

Let’s compare the two below.

• I went to see my neighbor –  Fui a ver a mi vecino
• I was his neighbor for many years – Fui su vecino por muchos años

All clear?

Good. Let’s move on.

Subject	Verb: Dar (to give)	English Equivalent
Yo	di	I gave
Tú	diste	You gave
Él/Ella/Usted	dio	He/She gave
Nosotros/Nosotras	dimos	We gave
Ellos/Ellas/Ustedes	dieron	They gave

 

Subject	Verb: Hacer (to do or to make)	English Equivalent
Yo	hice	I did
Tú	hiciste	You did
Él/Ella/Usted	hizo	He/She did
Nosotros/Nosotras	hicimos	We did
Ellos/Ellas/Ustedes	hicieron	They did

 

Subject	Verb: Ver (to see)	English Equivalent
Yo	vi	I saw
Tú	viste	You saw
Él/Ella/Usted	vio	He/She saw
Nosotros/Nosotras	vimos	We saw
Ellos/Ellas/Ustedes	vieron	They saw

Moving on, we can look at stem changing verbs in the preterite.

The good news is that not every irregular verb is completely unpredictable. The next group follows a consistent pattern: although the stem changes, the endings remain the same for every verb in the group.

Once you memorize the endings, learning these irregular preterite verbs becomes much easier.

 2) Irregular Preterite Verbs That Have Stem Changes, But Regular Endings

These irregular preterite verbs replace their normal stem with a new one but all share the same set of endings. Rather than memorizing every conjugation individually, you only need to learn each new stem and combine it with the common endings below.

Subject	Verb Endings
Yo	-e
Tú	-iste
Él/Ella/Usted	-o
Nosotros/Nosotras	-imos
Ellos/Ellas/Ustedes	-ieron

Once you learn these endings, simply add them to the new stem for the verb you wish to use.

Verbs	Preterite Stem	English Equivalent
Andar	Anduv-	To walk
Caber	Cup-	To fit
Estar	Estuv-	To be
Haber	Hub-	To have
Poder	Pud-	Be able to
Poner	Pus-	To put
Querer	Quis-	To want
Saber	Sup-	To know
Tener	Tuv-	To have
Venir	Vin-	To come

Once you’ve learned how to use these new stems, conjugating these irregular preterite verbs becomes much easier. Simply combine the stem with the irregular endings from the previous table:

• tener → tuv- → tuve, tuviste, tuvo, etc.
• poder → pud- → pude, pudiste, pudo, etc.
• venir → vin- → vine, viniste, vino, etc.

Rather than memorizing every conjugation individually, you only need to remember the stem change and apply the same set of endings each time.

Relatively straightforward, right?

3) Irregular Preterite Verbs Ending In -IR

Some -ir verbs undergo a second type of irregularity in the preterite. If they already have a stem change in the present tense, they usually keep a stem change in the preterite as well—but only in certain persons.

Unlike the present tense, these changes occur only in the third-person singular and plural (él/ella/usted and ellos/ellas/ustedes).

Before we elaborate on this, let’s review the endings for IR verbs in the preterite tense.

Personal pronoun	-IR verb Ending
Yo	-í
Tú	-iste
Él/Ella/Usted	-ió
Nosotros	-imos
Ustedes/Ellos/Ellas	-ieron

The above is quite straightforward.

Verbs ending in -IR that change stem in the simple present tense, will also change in the preterite, but only for the personal pronouns: él, ella, usted, ustedes, ellos, ellas.

The required stem change can be summarized into two groups, according to its changes:

Changes in Preterite tense

From (e) – to (i)

From (o) – to (u)

Let’s see some examples of these changes applied in the preterite tense.

Personal pronoun	Repetir (To repeat)	Morir (To die)
e – i	o – u
Yo	Repetí	Morí
Tú	Repetiste	Moriste
Él/Ella/Usted	Repitió	Murió
Nosotros	Repetimos	Morimos
Ustedes/Ellos/Ellas	Repitieron	Murieron

Other verbs that require a similar change.

• To have fun – Divertirse
• To sleep – Dormir
• To lie – Mentir
• To ask for – Pedir
• To prefer – Preferir
• To feel – Sentir
• To suggest – Sugerir
• To wear/to get dressed – Vestir/se

4) Irregular Preterite Verbs Ending In -UCIR

Another important family of irregular preterite verbs includes verbs ending in -ucir, along with decir and traer. These verbs share the same distinctive -j- stem and use a unique set of endings. Meaning, words like conducir (to drive), producir (to produce), traducir (to translate), etc, plus the verbs traer (to bring) and decir (to say), have the following endings in the preterite:

Subject	Verb Ending
Yo	-je
Tú	-jiste
Él/Ella/Usted	-jo
Nosotros/Nosotras	-jimos
Ellos/ellas/Ustedes	-jeron

Let’s see the proper conjugation for the previously mentioned verbs :

Subject	Verb: Traer (to bring)	English Equivalent
Yo	traje	I brought
Tú	trajiste	You brought
Él/Ella/Usted	trajo	He/She brought
Nosotros/Nosotras	trajimos	We brought
Ellos/Ellas/Ustedes	trajeron	They brought

 

Subject	Verb: Decir (to say)	English Equivalent
Yo	dije	I said
Tú	dijiste	You said
Él/Ella/Usted	dijo	He/She said
Nosotros/Nosotras	dijimos	We said
Ellos/Ellas/Ustedes	dijeron	They said

Sidenote

The verb Decir keeps the same vowel change (e to i) from the simple present tense (decir to digo) in all the pronouns for all tenses (except the imperfect tense).

Subject	Verb: Conducir (to drive)	English Equivalent
Yo	conduje	I drove
Tú	condujiste	You drove
Él/Ella/Usted	condujo	He/She drove
Nosotros/Nosotras	condujimos	We drove
Ellos/Ellas/Ustedes	condujeron	They drove

 

Subject	Verb: Producir (to produce)	English Equivalent
Yo	produje	I produced
Tú	produjiste	You produced
Él/Ella/Usted	produjo	He/She produced
Nosotros/Nosotras	produjimos	We produced
Ellos/Ellas/Ustedes	produjeron	They produced

 

Subject	Verb: Traducir (to translate)	English Equivalent
Yo	traduje	I translated
Tú	tradujiste	You translated
Él/Ella/Usted	tradujo	He/She translated
Nosotros/Nosotras	tradujimos	We translated
Ellos/Ellas/Ustedes	tradujeron	They translated

Sidenote

Even though many third-person preterite forms end in -ió, verbs ending in -jo never take an accent.

•  dijo
• trajo
• condujo

 

5) Verbs that are irregular in the “yo” form

Our final group isn’t irregular because of its endings, but because of its spelling.

These are called orthographic irregular verbs. The pronunciation stays exactly the same, but the spelling changes in the yo form to preserve the original sound.

There are three categories of verbs where this happens:

• Verbs ending in -car change c to qu
• Verbs ending in -gar change g to gu
• Verbs ending in -zar change z to c

1. a) Verbs ending in -car change c to qu

Let’s see some examples.

Subject	Verb: Tocar (to touch)	English Equivalent
Yo	toqué	I touched
Tú	tocaste	You touched
Él/Ella/Usted	tocó	He/She touched
Nosotros/Nosotras	tocamos	We touched
Ellos/Ellas/Ustedes	tocaron	They touched

 

Subject	Verb: Secar (to dry)	English Equivalent
Yo	sequé	I dried
Tú	secaste	You dried
Él/Ella/Usted	secó	He/She dried
Nosotros/Nosotras	secamos	We dried
Ellos/Ellas/Ustedes	secaron	They dried

 

Subject	Verb: Buscar (to look for)	English Equivalent
Yo	busqué	I looked for
Tú	buscaste	You looked for
Él/Ella/Usted	buscó	He/She looked for
Nosotros/Nosotras	buscamos	We looked for
Ellos/Ellas/Ustedes	buscaron	They looked for

1. B) Verbs ending in -gar change g to gu

Subject	Verb: Regar (to water)	English Equivalent
Yo	regué	I watered
Tú	regaste	You watered
Él/Ella/Usted	regó	He/She watered
Nosotros/Nosotras	regamos	We watered
Ellos/Ellas/Ustedes	regaron	They watered

 

Subject	Verb: Pagar (to pay)	English Equivalent
Yo	pagué	I paid
Tú	pagaste	You paid
Él/Ella/Usted	pagó	He/She paid
Nosotros/Nosotras	pagamos	We paid
Ellos/Ellas/Ustedes	pagaron	They paid

 

Subject	Verb: Llegar (to arrive)	English Equivalent
Yo	llegué	I arrived
Tú	llegaste	You arrived
Él/Ella/Usted	llegó	He/She arrived
Nosotros/Nosotras	llegamos	We arrived
Ellos/Ellas/Ustedes	llegaron	They arrived

1. C) Verbs ending in -zar change z to c

Subject	Verb: Cazar (to hunt)	English Equivalent
Yo	cacé	I hunted
Tú	cazaste	You hunted
Él/Ella/Usted	cazó	He/She hunted
Nosotros/Nosotras	cazamos	We hunted
Ellos/Ellas/Ustedes	cazaron	They hunted

 

Subject	Verb: Empezar (to start)	English Equivalent
Yo	empecé	I started
Tú	empezaste	You started
Él/Ella/Usted	empezó	He/She started
Nosotros/Nosotras	empezamos	We started
Ellos/Ellas/Ustedes	empezaron	They started

 

Subject	Verb: Rezar (to pray)	English Equivalent
Yo	recé	I prayed
Tú	rezaste	You prayed
Él/Ella/Usted	rezó	He/she prayed
Nosotros/Nosotras	rezamos	We prayed
Ellos/Ellas/Ustedes	rezaron	They prayed

Final Thoughts on Irregular Preterite Verbs

The next time you come across a sentence like “Ayer tuve que salir temprano” or “Ella dijo que sí”, don’t worry if you can’t immediately explain why the verb looks different. Recognition comes before production. The more you expose yourself to Spanish through conversations, books, podcasts, or TV shows, the more these forms will start to feel familiar.

Eventually, you’ll stop thinking of tuve, hice, or trajeron as “irregular preterite verbs” and simply recognize them as the past tense forms of some of Spanish’s most common verbs. And that’s when you know they’re becoming part of your Spanish rather than just another grammar rule.

So don’t try to master all of them in one sitting: learn a few patterns, notice them when native speakers use them, and keep adding to your mental library. 

You’ll be surprised how quickly they stop feeling irregular!

Irregular Preterite Verbs: Practice

Conjugate the verb into the correct Preterite form

1. El año pasado mi hermana y yo (ir) ____ a Chile
2. La semana pasada mi esposa (cocinar) ____ una pasta deliciosa con albóndigas
3. Mi hermano (ser) ____ un buen estudiante. Siempre sacaba buenas notas en las pruebas de Matemáticas
4. Mis padres (tener) ____ abandonar sus estudios, porque eran muy costosos
5. Mi familia no (traer) ____ nada de comida o pasapalos a la fiesta pasada de cumpleaños.
6. La película (comenzar) hace media hora. (Llegar) (Tú) ____ muy tarde
7. Al fin (encontrar) (yo) ____ mis llaves. Las había dejado dentro de la gaveta de la cocina
8. Ella me (pedir) ____ un carro nuevo la Navidad pasada. Desafortunadamente no (poder) (yo) ____ comprarlo porque no tenía dinero suficiente
9. Karla no (traducir) el documento completo, es por eso que ahora tiene mucho más trabajo por hacer.
10. Hace dos años mi familia y yo (viajar) a Estados Unidos de vacaciones. (Ser) ___ un viaje genial.

Answers

1. El año pasado mi hermana y yo fuimos a Chile
2. La semana pasada mi esposa cocinó una pasta deliciosa con albóndigas
3. Mi hermano fue un buen estudiante. Siempre sacaba buenas notas en las pruebas de Matemáticas
4. Mis padres tuvieron que abandonar sus estudios, porque eran muy costosos
5. Mi familia no trajo nada de comida o pasapalos a la fiesta pasada de cumpleaños
6. La película comenzó hace media hora. Llegaste muy tarde
7. Al fin encontré mis llaves. Las había dejado dentro de la gaveta de la cocina.
8. Ella me pidió un carro nuevo la navidad pasada. Desafortunadamente no pude comprarlo porque no tenía dinero suficiente.
9. Karla no tradujo el documento completo, es por eso que ahora tiene mucho más trabajo por hacer.
10. Hace dos años mi familia y yo viajamos a Estados Unidos de vacaciones. Fue un viaje genial.