Spanish Irregular Verbs: The 25 You'll Use Every Day.

Here's the cruel joke at the heart of Spanish: the verbs you'll use most often are exactly the ones that refuse to follow the rules. While perfectly regular verbs like caminar and estudiar sit quietly doing what they're told, the verbs at the centre of every conversation — ser, ir, tener, hacer, decir — go completely their own way.

This isn't a coincidence. It's a linguistic phenomenon that appears across languages worldwide. The most frequently used verbs are the ones that have been spoken billions of times over centuries, worn into unique shapes by constant use, their irregularities preserved precisely because speakers encounter them too often to let them drift back toward the regular pattern.

The good news: their high frequency is also your best ally. You don't need to memorise these verbs through brute force: you need to use them enough that the forms become automatic. And with 25 verbs, there's a realistic path to doing exactly that.

This guide covers the present tense. Own these forms first, and you'll have a solid foundation to build every other tense on top of.

How to use this guide

The 25 verbs below are grouped by the type of irregularity they share. Learning them in groups — rather than as isolated exceptions — gives you patterns to hang new knowledge on. When you encounter a new irregular verb later, you'll often recognise it as belonging to a family you already know.

For each group: read the pattern, study the conjugations, and then — crucially — close the page and try to write them out from memory. Recognition is not the same as recall. The productive struggle of trying to generate forms you haven't fully memorised yet is where the real learning happens. See our article on why Spanish verbs don't stick for the full explanation of why this matters.

Group 1: Completely irregular — learn these as individuals

These four verbs are so irregular that they don't belong to any family. They simply have to be memorised. Fortunately, you'll encounter them so constantly that they tend to stick faster than anything else.

1. Ser — to be (permanent characteristics)

Used for identity, nationality, profession, inherent qualities, and time. One of the two "to be" verbs in Spanish — don't confuse it with estar.

Soy médico. Son las tres de la tarde. — I'm a doctor. It's three in the afternoon.

2. Ir — to go

Completely irregular and one of the most useful verbs in the language. Also the key to the immediate future: voy a + infinitive (I'm going to…).

Voy al gimnasio. Vamos a cenar fuera esta noche. — I'm going to the gym. We're going to eat out tonight.

3. Haber — to have (auxiliary)

Not to be confused with tener. Haber is the auxiliary verb used to form compound tenses (like the perfect: he comido — I have eaten). In the present tense as a standalone verb, hay means "there is / there are."

Hay un problema. No he comido nada. — There's a problem. I haven't eaten anything.

4. Estar — to be (temporary states and location)

Regular-looking in most forms except yo and the accent marks. Used for emotions, conditions, locations, and the progressive tense (estoy comiendo — I am eating).

Estoy cansado. ¿Dónde está el baño? — I'm tired. Where is the bathroom?

Group 2: The yo-go verbs

These verbs are irregular only in the first-person singular (yo) form, where they end in -go instead of the expected -o. Every other form follows the regular -er or -ir pattern. Once you know to expect -go, none of these feel surprising.

5. Tener — to have

Also a stem-changer (e → ie) in the tú, él, ellos forms, on top of the irregular yo. Used far more broadly than the English "to have", covering age, feelings, and obligation (tengo que = I have to).

Tengo treinta años. Tenemos que salir ahora. — I'm thirty years old. We have to leave now.

6. Hacer — to do / to make

Irregular only in yo. Appears in dozens of essential expressions: hacer una pregunta (to ask a question), hacer ejercicio (to exercise), hacer calor/frío (to be hot/cold, weather).

Hago deporte por las mañanas. ¿Qué haces este fin de semana? — I exercise in the mornings. What are you doing this weekend?

7. Poner — to put / to place

Irregular in yo only. Also used reflexively as ponerse: to put on clothing, or to become (an emotional state): me pongo nervioso — I get nervous.

Pongo la mesa a las dos. ¿Dónde pones las llaves? — I set the table at two. Where do you put the keys?

8. Salir — to leave / to go out

Irregular in yo only. Essential for social plans: salir con amigos, salir a tomar algo, salir de fiesta.

Salgo del trabajo a las seis. ¿Salimos esta noche? — I leave work at six. Shall we go out tonight?

9. Traer — to bring

Irregular in yo only. One of those verbs that doesn't get as much spotlight as it deserves, but you'll use it constantly in everyday situations.

Traigo el vino, ¿tú traes el postre? — I'll bring the wine, will you bring dessert?

10. Caer — to fall

Irregular in yo only. Also used in the expression caer bien/mal — to like/dislike someone (literally, for someone to "fall well/badly" on you): me cae bien — I like him/her.

Me caigo de sueño. Me cae muy bien tu amigo. — I'm falling asleep (exhausted). I really like your friend.

11. Venir — to come

A yo-go verb that also has a stem change (e → ie) in the tú, él, ellos forms, similar in structure to tener. Pair it with ir: vengo de (coming from) vs. voy a (going to).

Vengo del trabajo. ¿Vienes a la reunión mañana? — I'm coming from work. Are you coming to the meeting tomorrow?

12. Decir — to say / to tell

Both a yo-go verb and a stem-changer (e → i). Highly irregular overall, but so common you'll absorb it quickly. The backbone of reported speech and instructions.

Digo lo que pienso. ¿Qué dice el médico? — I say what I think. What does the doctor say?

13. Oír — to hear

An unusual irregular: the yo form adds a g, and spelling changes apply in tú, él, ellos to preserve pronunciation. Less dramatic in practice than it looks on paper.

Oigo música desde mi habitación. ¿Oyes eso? — I can hear music from my room. Do you hear that?

Group 3: Irregular yo only (no -go)

These verbs have an irregular first-person singular that doesn't end in -go: they follow their own individual pattern in the yo form only, with everything else regular.

14. Saber — to know (facts and skills)

Yo sé is the only irregular form. Remember the distinction: saber is for knowing facts and knowing how to do things; conocer is for knowing people and being familiar with places.

No sé la respuesta. ¿Sabes cocinar? — I don't know the answer. Do you know how to cook?

15. Ver — to see / to watch

Veo is the only irregular form; everything else is regular. Used for both seeing and watching (TV, films).

Veo series en español para practicar. ¿Ves lo que quiero decir? — I watch Spanish shows to practice. Do you see what I mean?

16. Dar — to give

Doy is the irregular form. Used in many fixed expressions beyond "to give": dar un paseo (to take a walk), dar las gracias (to thank), dar igual (to not matter).

Le doy las llaves. Me da igual dónde comemos. — I give him the keys. I don't mind where we eat.

17. Conocer — to know (people and places)

Regular except for yo conozco. This -zco ending in the yo form applies to many verbs ending in a vowel + -cer or -cir: producir (produzco), conducir (conduzco), traducir (traduzco).

Conozco bien Madrid. ¿Conoces a mi amiga Laura? — I know Madrid well. Do you know my friend Laura?

Group 4: Stem-changing verbs (e → ie)

The stem vowel e changes to ie in all forms except nosotros and vosotros. Draw the affected forms on a conjugation table and they form the shape of a boot — all four "corners" change, the two in the middle don't.

18. Querer — to want / to love

Quiero un café. Te queremos mucho. — I want a coffee. We love you a lot.

19. Pensar — to think

Pienso que tienes razón. ¿Qué piensas tú? — I think you're right. What do you think?

20. Entender — to understand

No entiendo la pregunta. ¿Entiendes lo que digo? — I don't understand the question. Do you understand what I'm saying?

Group 5: Stem-changing verbs (o → ue)

Same boot pattern as above, but the o in the stem changes to ue. Once you've seen it in poder, you'll recognise it immediately in volver, dormir, encontrar, and many others.

21. Poder — can / to be able to

No puedo dormir. ¿Puedes ayudarme con esto? — I can't sleep. Can you help me with this?

22. Volver — to return / to come back

Vuelvo a casa a las ocho. ¿A qué hora vuelven los niños? — I get home at eight. What time do the kids get back?

23. Dormir — to sleep

Duermo mal cuando tengo estrés. El bebé ya duerme solo. — I sleep badly when I'm stressed. The baby already sleeps on his own.

Group 6: Stem-changing verbs (e → i)

This change only occurs in -ir verbs. The e in the stem changes to i in the boot forms. Fewer verbs belong to this group, but they're common ones.

24. Pedir — to ask for / to order

Pido siempre lo mismo en este restaurante. ¿Qué pides tú? — I always order the same thing at this restaurant. What are you ordering?

25. Seguir — to follow / to continue

An e → i stem-changer with an additional spelling change in yo: the gu becomes g before o to preserve the hard g sound. Also used as "to keep doing something": sigo aprendiendo — I keep learning.

Sigo aprendiendo cada día. ¿Sigues viviendo en Valencia? — I keep learning every day. Are you still living in Valencia?

The patterns at a glance

How to actually learn these

Twenty-five verbs is a manageable target, but only if you approach them with the right method. Reading this article once will give you familiarity. What builds genuine command is repeated active recall: looking away from the conjugation table and writing the forms out from memory, getting them wrong, checking, and trying again the next day.

The most efficient path is one verb per day. Not five at once, not a whole group in a weekend session. One verb, studied properly, practised with production, and then left to consolidate overnight while you move on to the next one.

That's exactly the rhythm Solo Una is built around. Every day a fresh verb drops into your library. You read the conjugation in context, see it used in real sentences, and then practice by typing it out yourself — no multiple choice, no hints. By the time you've worked through these 25 irregular verbs, each one will have had its own day of focused attention and a night of memory consolidation.

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What comes next

The present tense is the foundation, but these same verbs behave irregularly in other tenses too, often following related but distinct patterns. Once you've locked in the present forms, the natural next step is the preterite (pretérito indefinido), where many of these verbs have their own separate irregular forms to learn.

For now though: present tense, 25 verbs, one at a time. That's the whole plan. It's enough.

To see all 25 of these verbs in the broader context of everyday Spanish, the 20 most common Spanish verbs guide shows them in action with example sentences. And if you want a solid grounding in how the present tense system works as a whole, start with the complete beginner guide to the Spanish present tense.