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What is the Meaning of “Reaffirm”?

Reaffirm
/ˌriːəˈfɜːrm/
verb C1 Tier 4 (Top 10,000 words) formal academic

To say something again firmly, to make sure people believe it is still true and important.

Definition of Reaffirm

Quick Meaning of Reaffirm

To say something again firmly, to make sure people believe it is still true and important.

Detailed Definition of Reaffirm

To state or confirm something again, emphasizing its continued validity or importance.

How to Pronounce Reaffirm

IPA: /ˌriːəˈfɜːrm/
re af firm

Stress pattern: ooO (3-syllable word).

Tip: Stress the final syllable: ree-uh-FURM. The 're-' prefix is unstressed.

Watch out: Some learners stress the first or second syllable (REE-uh-furm or ree-AH-furm). Correct: ree-uh-FURM (final syllable stressed).

Full pronunciation guide for “reaffirm” →

Origin and Etymology of Reaffirm

From Latin 're-' (again) + 'affirm' (from Latin 'ad-' meaning 'to' + 'firmare' meaning 'to strengthen'). Entered English in 16th century.

How to Use Reaffirm in a Sentence

Each example shows “reaffirm” with a CEFR level so learners can pick examples that match their fluency.

  • “The president reaffirmed the government's commitment to environmental protection.”
    C1 formal
  • “Both countries reaffirmed their alliance through the new treaty.”
    C1 academic
  • “The company reaffirmed its promise to improve employee benefits.”
    C1 written

Synonyms and Antonyms of Reaffirm

Common Synonyms for Reaffirm

Smart Synonyms for Reaffirm — When to Use Each

confirm
Simpler; to state something is true
reassert
Emphasizes strong re-statement of belief or claim
reiterate
More formal; to repeat emphatically

See all synonyms for “reaffirm” →

Common Collocations with Reaffirm

These phrases pair with “reaffirm” in everyday English:

  • reaffirm commitment
  • reaffirm support
  • reaffirm faith
  • reaffirm promise
  • reaffirm stance

Common Mistakes When Using Reaffirm

Even fluent speakers slip up with “reaffirm”. Here’s how to avoid the most common errors:

✗ Wrong: The minister reaffirmed the new environmental policy.
✓ Correct: The minister reaffirmed the existing environmental policy. / The minister reaffirmed his commitment to the environmental policy.
Why: 'Reaffirm' means to confirm something again that was previously stated. Use with established promises or beliefs, not necessarily new ones.
✗ Wrong: She reaffirmed her support about the project.
✓ Correct: She reaffirmed her support for the project.
Why: Use 'support for' not 'support about' with reaffirm.
✗ Wrong: They reaffirmed to improve conditions.
✓ Correct: They reaffirmed their commitment to improve conditions. / They reaffirmed that they would improve conditions.
Why: 'Reaffirm' needs a direct object (noun/that-clause). Say 'reaffirm [what]' not just 'reaffirm to do'.

Other Forms of Reaffirm

Frequently Asked Questions About Reaffirm

What is the meaning of "Reaffirm"?

To say something again firmly, to make sure people believe it is still true and important.

How do you pronounce "Reaffirm"?

The IPA is /ˌriːəˈfɜːrm/. Stress the final syllable: ree-uh-FURM. The 're-' prefix is unstressed.

What part of speech is "Reaffirm"?

"Reaffirm" is a verb at C1 level (Common European Framework).

What are synonyms for "Reaffirm"?

Common synonyms include confirm, reassert, reiterate.

How do you use "Reaffirm" in a sentence?

For example: "The president reaffirmed the government's commitment to environmental protection."

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