ENGLISH
REFERENCE

confirm

v. · adv.
US //kənˈfɝm// UK //kənfˈɜːm// con·firm
  1. 1 to verify information (v.)
    B1 Intermediate General-service

    to say or show that something is definitely true or correct.

    to establish the truth or correctness of something previously believed, suspected, or stated.

    Example

    The police were able to confirm that the man was telling the truth.

    Example

    The latest laboratory results confirm the researchers' initial hypothesis regarding the chemical stability of the new compound.

    Usage

    Often followed by a 'that' clause or a noun phrase.

  2. 2 to make a plan final (v.)
    B1 Intermediate General-service

    to make an arrangement or a meeting final.

    to make a provisional arrangement, appointment, or agreement definite and final.

    Example

    I am calling to confirm my hotel reservation for next Tuesday.

    Example

    The board of directors met yesterday to confirm the appointment of the new chief executive officer.

    Usage

    Commonly used in business contexts regarding bookings and appointments.

Show 2 more sensesShow fewer
  1. 3 religious rite (v.)
    B2 Upper Intermediate Formal Religion

    to welcome someone as a full member of a Christian church in a special ceremony.

    to administer the rite of confirmation to a person, admitting them to full church privileges.

    Example

    She was confirmed in the local cathedral when she was fourteen years old.

    Example

    The bishop visited the parish last Sunday to confirm twenty young members of the congregation.

    Usage

    Usually used in the passive voice when referring to the person receiving the rite.

  2. 4 definitely (adv.)
    C1 Advanced Dialect Informal Slang

    used to say that something is definitely going to happen or is true.

    used as a sentence-final or standalone particle to indicate absolute certainty.

    Example

    Don't worry, he will come for the party confirm.

    Example

    If you don't study for the final exam, you will fail confirm.

    Usage

    Typical of Singlish and Manglish; often placed at the end of a sentence.

    Teacher's tip

    This adverbial use is specific to South East Asian English dialects like Singlish; it is not used this way in standard British or American English.

Origin

From Middle English confirmen, confermen, from Old French confermer, from Latin cōnfirmāre (“to make firm, strengthen, establish”), from con- (“together”) + firmāre (“to make firm”), from firmus (“firm”).

© 2026 English Reference