confirm is on the Academic Word List.

Pronunciation change

Verb change

Plain form
confirm

Third-person singular
confirms

Past tense
confirmed

Past participle
confirmed

Present participle
confirming

  1. (transitive) If something confirms an idea, it show that it is true.
    The results of the study confirm previous research on the topic.
  2. (transitive) If you confirm a possible agreement or plan, you tell somebody that it is now final and official.
    Can we confirm that the meeting is at 10:00?
  3. (transitive) If a Christian priest confirms a baptized person, they admit them to full participation in the church.

Related words change