Did you know?

Click any word in a definition or example to find the entry for that word

confirm - definition and synonyms

What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.

Thesaurus diagram

The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning.

verb     confirm pronunciation in British English
Word Forms
present tense
present participleconfirming
past tenseconfirmed
past participleconfirmed
  1. 1
    [transitive] to prove that something is true

    Please bring something with you that confirms your identity.

    confirm (that):

    The doctor may do a test to confirm that you are pregnant.

    1. a.
      to make you feel sure that an idea or belief is right or true
      confirm someone’s suspicions:

      Their strange behaviour was enough to confirm my suspicions.

      confirm someone’s fears:

      When she saw the letter her worst fears were confirmed.

      confirm someone in their belief/view/determination etc:

      His words confirmed me in my belief that our cause was right.

    2. b.
      to say that something is definitely true because you know about it

      We cannot confirm the number of jobs that will be lost.

      confirm that:

      The head teacher confirmed that two pupils had been expelled.

  2. 2
    [intransitive/transitive] to tell someone, usually by writing or telephoning, that something will definitely happen at the time or in the way that has been arranged

    The date of the meeting is still to be confirmed.

    You can make an appointment now, and then call nearer the time to confirm.

  3. 3
    [transitive] to formally support something and allow it to happen

    The parliament’s decision still has to be confirmed in a referendum.

  4. 4
    [transitive] [usually passive] to formally accept someone into the Christian Church or a Reform Jewish Church in a special ceremony
  • Facebook
  • Twitter


to manipulate someone psychologically so that they begin to question their own perceptions and memories

BuzzWord Article

Open Dictionary

Dunning-Kruger effect

the phenomenon by which an incompetent person is too incompetent to understand his own incompetence

add a word


A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog
Macmillan learn live love play