How to Say “I Promise” in Portuguese

eu prometo
The English phrase "I promise" is translated into Portuguese as eu prometo.
This phrase is used to provide an assurance, whether formal or informal, that you will definitely perform a specific action.

How does it change in a sentence?

If you want to follow your promise with a clause containing a subject and a verb, you typically use the conjunction que after the phrase, resulting in eu prometo que. If you want to say "I promise to [verb]", you place the infinitive form of the second verb directly after eu prometo, such as in eu prometo fazer isso.

Did you know?

  • In traditional Portuguese folk culture, a promessa is often not just a verbal promise, but a physical vow made to a saint, sometimes involving a pilgrimage or a specific sacrifice.
  • In Brazil, people often use the phrase palavra de honra as a stronger alternative to eu prometo to signal that their personal honor is at stake.
  • The English word 'ego', which is a psychological term, is a direct linguistic relative of the Portuguese eu used in 'eu prometo'.

Examples in context

  • Eu prometo que vou.
    I promise that I'll come.
    This example shows how to use eu prometo to state an intention to arrive.
    Tatoeba #11067354 by Advanced, translation #3825662 by CK
  • Eu voltarei. Eu prometo.
    I'll come back. I promise.
    This example shows how to use eu prometo as a standalone confirmation of a return.
    Tatoeba #3805961 by muriloricci, translation #3555640 by Hybrid
  • Não vai doer, eu prometo.
    It won't hurt, I promise.
    This example shows how to use eu prometo to provide reassurance regarding pain.
    Tatoeba #5080748 by Ricardo14, translation #2276553 by CK
  • Prometo que vou cumprir o prazo estabelecido.
    I promise I'll meet the deadline.
  • Dou a minha palavra que cumprirei com o acordo proposto.
    I give you my word that I'll fulfill the proposed agreement.
  • Eu te prometo que estarei lá para apoiar você sempre.
    I promise you I'll always be there to support you.
  • Juro por tudo que é mais sagrado que nunca mais vou te decepcionar.
    I swear on everything sacred that I'll never disappoint you again.
  • 37 more sentences on Tatoeba

Example conversation

Mariana asks Gabriel to help her clean the house.

  1. Mariana

    Você pode me ajudar a limpar a casa?
    Can you help me clean the house?
  2. Gabriel

    Sim, eu ajudo você amanhã, eu prometo.
    Yes, I will help you tomorrow, I promise.
  3. Mariana

    Você sempre diz isso, Gabriel.
    You always say that, Gabriel.
  4. Gabriel

    Desta vez é verdade, eu prometo!
    This time it is true, I promise!

Sources

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Vanessa Maureen
Vanessa MaureenHelp make this guide better. Spot a mistake, know another way to say it, or have an example from real life? Share it below.
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