Regular vs. Irregular Verbs

In previous lessons, you got to learn the verb “ser”, which we told you was an irregular verb. (If learning 50 conjugations of a verb wasn’t enough, we also have to watch out for the dreaded irregular verbs! 🙈)
Why are they called that? Well, they are irregular because they don’t follow the same conjugation patterns as regular verbs. To make sure you’re ready to face more verbs in the coming lessons, today we’ll be looking at both regular and irregular verbs in Portuguese. Hang on to your hats!

Irregular verbs happen in English too

Have you noticed that English also has irregular verbs? The verb “to be” is a good example – could you explain to a beginner why “you is” or “she am” is incorrect?
You can’t! The correct conjugations just have to be memorized because they come from an irregular verb.

Irregular verbs in Portuguese

In Portuguese, when you conjugate a regular verb, you take the root (which doesn’t change throughout the conjugation) and you add an ending, which varies according to the subject, number, and tense. According to how the verb ends (-ar, -er, or -ir) these endings are always the same.
With irregular verbs, this doesn’t happen.
Some irregular verbs present changes in the root, others in the termination rules, and others in both of them. But being classified as irregular doesn’t necessarily mean that the entire conjugation becomes weird and unfamiliar. Sometimes it’s only in certain conjugation forms and sometimes a Portuguese verb can be irregular in one tense (i.e. present tense) but regular in another… que confusão!

Changes in the root:

Medir To measure

Root: Med-

I measure = Eu meço (instead of “Eu medo”)


Trazer To bring

Root: Traz-

I bring = Eu trago (instead of “Eu trazo”)

Changes in the ending:

Fazer To do

He does = Ele faz (instead of “Ele faze“)

Estar To be

I am = Eu estou (instead of “Eu esto“)

How can you tell whether a verb is regular or irregular?

There is no way to know if the verb will be regular or not just by looking at the infinitive form of the verb. Again, you just need to memorize them over time!
However, depending on how different an irregular verb is from what it “should” be, it is possible to group the irregular verbs into:

  • Strong Irregular Verbs examples:
    • Estar To be
    • Dar To give
    • Ter To have
    • Saber To know
    • Fazer To do
    • Querer To want
    • Poder To be able to
    • Dizer To tell
  • Weak Irregular Verbs examples:
    • Ouvir To hear
    • Perder To lose
    • Medir To measure
    • Pedir To ask
  • Totally Different Verbs examples:

to be (permanent condition)


Ser – Indicativo – Presente

Tu és uma boa pessoa.
You’re a good person.

  • eu sou
  • I am
  • tu és
  • you are
  • ele / ela é
  • he / she is
  • você é
  • you formal are
  • nós somos
  • we are
  • eles / elas são
  • they masc. / they fem. are
  • vocês são
  • you pl. are


to have


Ter – Indicativo – Presente

Tu tens olhos azuis.
You have blue eyes.

  • eu tenho
  • I have
  • tu tens
  • you have
  • ele / ela tem
  • he / she has
  • você tem
  • you formal have
  • nós temos
  • we have
  • eles / elas têm
  • they masc. / they fem. have
  • vocês têm
  • you pl. have


to go


Ir – Indicativo – Presente

Nós vamos lá muito.
We go there a lot.

  • eu vou
  • I go
  • tu vais
  • you go
  • ele / ela vai
  • he / she goes
  • você vai
  • you formal go
  • nós vamos
  • we go
  • eles / elas vão
  • they masc. / they fem. go
  • vocês vão
  • you pl. go


to come


Vir – Indicativo – Presente

Nós vimos aqui relaxar.
We come here to relax.

  • eu venho
  • I come
  • tu vens
  • you come
  • ele / ela vem
  • he / she comes
  • você vem
  • you formal come
  • nós vimos
  • we come
  • eles / elas vêm
  • they masc. / they fem. come
  • vocês vêm
  • you pl. come


An example with -AR Verbs

You may have already seen some regular -AR verbs, like “falar”:

to speak


Falar – Indicativo – Presente

Eu falo com ela todos os dias.
I speak with her everyday.

  • eu falo
  • I speak
  • tu falas
  • you speak
  • ele / ela fala
  • he / she speaks
  • você fala
  • you formal speak
  • nós falamos
  • we speak
  • eles / elas falam
  • they masc. / they fem. speak
  • vocês falam
  • you pl. speak


Now have a look at one of the most common irregular -AR verbs:

to be (temporary or accidental condition)


Estar – Indicativo – Presente

Nós estamos quase lá.
We are almost there.

  • eu estou
  • I am
  • tu estás
  • you are
  • ele / ela está
  • he / she is
  • você está
  • you formal are
  • nós estamos
  • we are
  • eles / elas estão
  • they masc. / they fem. are
  • vocês estão
  • you pl. are


Let’s compare the endings of the 2 verbs’ conjugations:

Regular AR Ending Actual Conjugation
-o Eu estou
-as Tu estás
-a Ele / Ela / Você está
-amos Nós estamos
-am Eles / Elas / Vocês estão

Tip: As you start memorizing more irregular verbs, you may see patterns. For example, although the verb “dar” is also irregular, it happens to be conjugated with the same endings as “estar”:

to give


Dar – Indicativo – Presente

Eu dou as minhas roupas para caridade.
I give my clothes to charity.

  • eu dou
  • I give
  • tu dás
  • you give
  • ele / ela
  • he / she gives
  • você
  • you formal give
  • nós damos
  • we give
  • eles / elas dão
  • they masc. / they fem. give
  • vocês dão
  • you pl. give


Other Common Irregular Verbs

to hate


Odiar – Indicativo – Presente

Os miúdos odeiam vegetais.
The kids hate vegetables.

  • eu odeio
  • I hate
  • tu odeias
  • you hate
  • ele / ela odeia
  • he / she hates
  • você odeia
  • you formal hate
  • nós odiamos
  • we hate
  • eles / elas odeiam
  • they masc. / they fem. hate
  • vocês odeiam
  • you pl. hate


to see


Ver – Indicativo – Presente

Eu vejo bem porque uso óculos.
I see well because I wear glasses.

  • eu vejo
  • I see
  • tu vês
  • you see
  • ele / ela
  • he / she sees
  • você
  • you formal see
  • nós vemos
  • we see
  • eles / elas veem
  • they masc. / they fem. see
  • vocês veem
  • you pl. see


to leave


Sair – Indicativo – Presente

Tu sais sempre do trabalho muito cansado.
You always leave work very tired.

  • eu saio
  • I leave
  • tu sais
  • you leave
  • ele / ela sai
  • he / she leaves
  • você sai
  • you formal leave
  • nós saímos
  • we leave
  • eles / elas saem
  • they masc. / they fem. leave
  • vocês saem
  • you pl. leave


Remember, you can always reference our Verbs section for help with conjugating regular and irregular verbs in different tenses.


    • Hey, Shirley. Oh, it certainly could – “ter” is also a highly irregular verb. This is not an extensive list, though, just a few examples. I’ll add it anyway, since it’s a verb that we use all the time and good to know.

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