affirm

affirm — verb

1. to express in a firm way that a fact, claim, or belief is correct.

1.verbtransitiveC1
Definition

to express in a firm way that a fact, claim, or belief is correct.

Example

Maria affirmed that the lost wallet had been returned before noon.

affirm + that-clause for a stated fact

At the meeting, the coach affirmed his belief that the team could recover.

affirm + belief

Common collocations
  • affirm a belief
  • affirm innocence
  • affirm a statement
  • firmly affirm
Synonyms
  • assert

    close in meaning, but often sounds more forceful or argumentative

  • confirm

    usually adds the idea of proof or later support

  • maintain

    stresses continuing to hold the same position

Antonyms
  • deny

    to say something is not true

  • withdraw

    to take back a statement or claim

Grammar Patterns

affirm + that-clause

affirm + noun (belief, innocence, statement)

Usage Note

Often takes a that-clause or nouns such as belief, innocence, and statement. Distinguish from sense 2: here the speaker presents something as true, not as a cause to support.

Common Mistakes

She affirmed to come on Monday.
She affirmed that she would come on Monday.
this sense takes a that-clause or noun, not a to-infinitive.

2. to openly defend an idea, value, or right by showing strong support for it.

2.verbtransitiveC1
Definition

to openly defend an idea, value, or right by showing strong support for it.

Example

The group affirmed its support for smaller class sizes at the rally.

affirm + support for

By signing the letter, local doctors affirmed the town's right to clean water.

affirm + right to + noun

Common collocations
  • affirm support for
  • affirm a right
  • affirm a commitment
  • publicly affirm
Synonyms
  • support

    the most general and less formal choice

  • endorse

    often used for official or public approval

  • uphold

    stresses protecting a principle or right

Antonyms
  • oppose

    to show that you are against an idea or policy

  • reject

    to refuse to accept or back an idea

Grammar Patterns

affirm + noun (support, commitment, right)

affirm + possessive + noun

Usage Note

Object is usually an abstract idea such as support, commitment, right, or promise. Common in speeches, public letters, and group statements. Distinguish from sense 1, where the object is a claim presented as true.

Common Mistakes

Parents affirmed to the plan.
Parents affirmed their support for the plan.
this sense does not use 'affirm to'; it usually takes a direct object such as 'support' or 'commitment'.

Word family

Synonym discussion

Sense: verb/1

For sense 1, affirm is formal and deliberate. You use it when someone states a fact or belief in a steady, definite way. Assert is very close, but it often sounds more forceful, especially in an argument. Confirm usually adds outside support, so it is common when later facts or evidence make a claim more certain. Maintain stresses continuing to hold the same position over time, often when other people disagree. Declare is broader and can sound official or public. A witness may affirm that the door was locked. Later, camera footage may confirm that account. A company may maintain that its product is safe during public criticism.

assert ↗confirm ↗maintain ↗declare ↗

Common collocations

Adverbs

Etymology

LatinOld FrenchMiddle EnglishEnglish

Affirm came into English from Old French affirmer, which came from Latin affirmare. In Latin, the word first carried the idea of making something firm or strengthening it, and from there it developed the sense of stating something with certainty. That older idea of firmness still shows in modern English, where affirm usually sounds more formal and definite than say.