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February 19, 2021 by Olga Put Spanish Grammar 0 comments

Your Guide to Future Irregulars in Spanish Grammar (with Free Cheat Sheet)

Luckily, future irregulars in Spanish are one of the easiest irregularities in Spanish grammar and the process to learn them is quick! 

Why do we have irregularities in Spanish verbs, anyway?

I’ll answer that along with a bit of history on the Spanish language. You’ll also learn why you don’t need to memorize all the future irregulars. 

Do you know how many future irregulars exist in Spanish? 

Keep reading to find out!

Near the end of this blog post, you’ll be able to solve some verb-related exercises and check your knowledge.

Let’s get started!

Why Are Some Verbs Irregular?

Most of us who’ve studied a foreign language have asked this question. One minute you feel confident about the grammar rules on conjugating verbs, and then your teacher introduces you to all the exceptions and irregularities!

So, why are some verbs irregular? 

Not only do future irregulars exist in Spanish, but in different languages as well. Also, irregular Spanish verbs exist in all the other tenses (see: 20 Easy Irregular Spanish Verbs to Learn). While there’s no single answer to the question of why irregular verbs exist, we can look back on this language and its history for clues. 

Irregular Verbs Are the Most Common Verbs

English linguist Arika Okrent explains that irregular verbs in all languages are the ones that we actually use more often than others. According to her, “If you take a look at the irregular verbs in [any language], they happen to be some of the ones we use the most. Because we used them so frequently, their forms were reinforced over and over again giving them strength to withstand the changes around them.” 

And because people in remote times were not privy to dictionaries or language academies that standardized speech, everyone focused entirely on repeating verb forms that allowed them to be understood (not necessarily grammatically correct). 

The Transformation of Latin to Spanish

You may well know that Spanish originated from Latin, which had four conjugational endings: -āre, -ēre, -ĕre, and īre. Look familiar? Over time, this transformed into the three conjugational endings that exist in Spanish: -ar, -er, and -ir. (Note that the second and third conjugation in Latin had a letter “e” of different length.) 

To make a long story short, the distinction between the long and short “e” became too complicated for speakers and soon disappeared from the language, but during the process, these irregularities got permanently imprinted on certain verbs.

How the Latin “E” Affects Spanish Irregulars

If you look at the words perder (to lose) and vender (to sell), you would expect the same forms. They both belong to the -er conjugation, don’t they? 

However, we say yo pierdo and yo vendo. Why? Because the first letter “e” in both words had different lengths in Latin. Short one in Latin pĕrdo, and long one in Latin vēndo.

Of all the conjugational endings, the -ar conjugation evolved without as many irregularities as the -er and -ir conjugations. As you’ll soon see in this list of future irregulars in Spanish, none of them belongs to the -ar group.

Download Your Free Guide to Future Irregulars in Spanish Grammar Cheat Sheet!

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The Future Simple Tense in Spanish

You already know that the future simple tense is one of the ways to talk about the future. As a quick reminder, let’s touch on some basic facts before we jump into future irregulars in Spanish.

future irregulars in Spanish

The best thing about the future simple tense is its regularity. 

It conjugates exactly the same in all three conjugations and all you have to do is add the same endings to the infinitive.

Regular Future Simple Tense Endings

SINGULARPLURAL
(yo) -é(nosotros) -emos
(tú) -ás(ustedes) -án 
(él, ella, usted) -á(ellos, ellas) -án

-AR conjugation: amar (to love)

Yo amaré Nosotros amaremos
Tú amarásUstedes amarán
Él amaráEllos amarán

-ER conjugation: comer (to eat)

Yo comeré Nosotros comeremos
Tú comerásUstedes comerán
Él comeráEllos comerán

-IR conjugation: escribir (to write)

Yo escribiré Nosotros escribiremos
Tú escribirásUstedes escribirán
Él escribiráEllos escribirán

If you need to refresh your knowledge about how and in what situations to use this tense, read the Future Simple Tense in Spanish or how to Master the 18 Spanish Tenses to get a broader view.

12 Future Irregulars in Spanish

Since the future simple tense is so regular, you’ll be happy to know that there are only 12 basic future Spanish irregulars:

  1. caber (to fit)
  2. decir (to say)
  3. haber (to have)
  4. hacer (to do)
  5. poder (can, to be able to)
  6. poner (to put)
  7. querer (to want)
  8. tener (to have)
  9. saber (to know)
  10. salir (to leave, go out)
  11. valer (to be worth)
  12. venir (to come)

That’s it. No more! 

Of course, this doesn’t include compound forms like rehacer, predecir or reponer, but these variations conjugate exactly the same as their basic form.

Did you notice there are no -ar verbs here? Told you!

I’ll tell you something that will make you even happier. You don’t have to learn 12 different future irregulars in Spanish. They all fall into 3 different, easy-to-remember categories. You just need to learn three! 

And same as in other tenses, the irregularity will occur inside the stem of the word, not in the ending.

There are three ways that the stem of the verb can change in future irregulars in Spanish:

  1. The stem will drop the letter –e in the infinitive ending.
  2. The stem will drop the letter –e/-i in the infinitive ending but will add a –d- instead.
  3. The stem will drop the infinitive -ce or –ec.

Let’s have a look at each one of them.

1. Forms That Drop the Letter –e in the Infinitive

You’ll only see -er group verbs in this category of future irregulars in Spanish and there are only 5 of them:

  1. caber 
  2. haber 
  3. poder 
  4. querer 
  5. saber 

Because these verbs drop the letter –e of the infinitive form before it adds the future simple tense endings, you say sabré instead of saberé (incorrect).

Conjugation Example: Saber

SINGULARPLURAL
yo sabrénosotros sabremos
tú sabrásustedes sabrán
él, ella, usted sabráellos, ellas sabrán

Example Sentences

Este vestido no te cabrá.
This dress will not fit you.

Ella cambió de opinión y no habrá boda.
She changed her mind and there will be no wedding.

Podrás mudarte a América Latina cuando acabes tus estudios.
You will be able to move to Latin AMerica when you finish your studies.

¿No querrá venir a cenar con nosotros?
Won’t you come for dinner with us?

Mañana ya sabremos los resultados del examen.
Tomorrow, we will know the results of the exam.

2. Forms That Drop the –e/-i in the Infinitive and Add –d-

There are also 5 verbs In this category of future irregulars in Spanish, and they belong to both -er and -ir conjugations.

  1. poner
  2. tener
  3. salir 
  4. valer 
  5. venir 

These verbs drop the –e/-i in the infinitive ending and add the letter –d- in its place before adding the future tense endings. Therefore, instead of poneré (incorrect), we say pondré.

Conjugation Example: Poner

SINGULARPLURAL
yo pondrénosotros pondremos
tú pondrásustedes pondrán
él, ella, usted pondráellos, ellas pondrán

Example Sentences

Pondré el libro en su lugar.
I’ll put the book in its place.

Mañana, tendrás que trabajar mucho.
Tomorrow, you’ll have to work a lot.

Saldremos a las 6 pm.
We will leave at 6 pm.

Valdrá la pena que vengas personalmente.
It would be good if you came personally.

Ustedes vendrán conmigo.
You will come with me.

3. Forms That Drop the Infinitive -ce or -ec

This will be your favorite category! There are only two verbs in here.

1.decir 

2. hacer 

These two verbs (and others related to them, like predecir (predict), deshacer (undo), contradecir (contradict), etc.) drop the infinitive –ce or -ec and add the future tense ending. So, we don’t say deciré (incorrect) but diré.

Conjugation Example: Decir

SINGULARPLURAL
yo dirénosotros diremos
tú dirásustedes dirán
él, ella, usted diráellos, ellas dirán

No me dirán cómo hacerlo, ¿verdad?
You won’t tell me how to do it, will you?

No te hará daño, te lo prometo.
He won’t hurt you, I promise.

Watch out!

There is an exception from this irregularity and the verbs maldecir (curse) and bendecir (bless) actually use regular forms.

Si pierdo, maldeciré mi mala suerte.
If I lose, I’ll curse my bad luck.

Mañana, el cura bendecirá la nueva escuela.
Tomorrow, the priest will bless the new school.

Spanish Grammar Exercises: Future Irregulars

Check how much you learned! Choose the correct form of future irregulars in Spanish in the following sentences. 

Put the verbs in parenthesis in the correct future tense form.

  1. Nosotros no lo __________. (hacer)
  2. ¿__________ espacio para una persona más? (tener)
  3. __________ mucha gente en la boda. (haber)
  4. ¿__________ perdonarme algún día? (poder)
  5. Pronto __________ de aquí. (salir)
  6. ¿Cómo __________ yo en este asiento para niños? (caber)
  7. __________
  8. Usted __________ más sobre el tema después de terminar el curso. (saber)
  9. ¿Qué se po__________ndrán para la fiesta? (poner)
  10. Mañana te __________ la verdad. (decir)
  11. __________
  12. ¿Qué __________ para tu cumpleaños? (querer)

Click here for the answers and the translation of sentences.

Keep Practicing!

Did you get all the answers correct? I’m sure you did and that now you’re an expert at future irregulars in Spanish. The only thing left to do is to practice them in conversation. Do you want to try it now? Sign up for a free class with one of our friendly native teachers from Guatemala and polish your future irregulars in Spanish with a native speaker.

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Sign up for your FREE TRIAL CLASS today!

Ready to learn more Spanish grammar? Check these out!

  • 50 Useful Spanish Transition Words for Everyday Speech and Writing
  • Master the 18 Spanish Tenses (and Take Our Cheat Sheet With You)
  • All About Adverbial Clauses in Spanish
  • The Ultimate Guide to the Differences Between ‘Pero’ and ‘Sino’ in Spanish
  • A Guide to Double Negatives in Spanish
  • Ver Conjugation: Free Spanish Lesson, Exercises, and PDF
  • Common Irregular Informal Commands in Spanish
  • Dialect vs Accent: Is It a Language, Dialect, or Accent?

Answer Key

  1. haremos.
  2. tendrán
  3. habrá
  4. podrás
  5. saldremos
  6. cabré
  7. hará
  8. sabrá
  9. pondrán
  10. diré
  11. valdrá
  12. querras

English Translation of The Sentences With Answers

  1. We will not do it.
  2. Will they have room for one more person?
  3. There will be a lot of people at the wedding.
  4. Can you ever forgive me?
  5. We’ll be out soon.
  6. How will I fit in this child seat?
  7. Who will make the food?
  8. You will know about the subject after finishing the course.
  9. What will they wear to the party?
  10. Tomorrow, I will tell you the truth.
  11. It will be worth a try, the risk is very small.
  12. What do you want for your birthday?
  • Author
  • Recent Posts
Olga Put
Olga Put
Freelance Writer at Homeschool Spanish Academy
I'm a Spanish philologist, teacher, and freelance writer with a Master's degree in Humanities from Madrid. I speak Polish, Spanish, and English fluently, and want to get better in Portuguese and German. A lover of literature, and Mexican spicy cuisine, I've lived in Poland, Spain, and Mexico and I'm currently living and teaching in Madeira, Portugal.
Olga Put
Latest posts by Olga Put (see all)
  • All About Adverbial Clauses in Spanish - January 8, 2025
  • The Ultimate Guide to the Differences Between ‘Pero’ and ‘Sino’ in Spanish - December 26, 2024
  • Common Irregular Informal Commands in Spanish - November 29, 2024
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