8 Synonyms for 'Confirm'

When you want to express certainty or verify something, the word 'confirm' can often come in handy. However, if you'd like to enrich your vocabulary and avoid repetition, there are several alternatives you can use. Here are eight synonyms for 'confirm' along with explanations and examples:

  • Validate: To confirm the accuracy, truth, or reality of something.
  • Corroborate: To confirm or give support to a statement, theory, or finding.
  • Affirm: To state something positively or as a fact; to confirm or ratify.
  • Verify: To confirm the truth or accuracy of something.
  • Substantiate: To confirm or prove the truth of something with evidence.
  • Assure: To confirm or give confidence; to dispel doubts or worries.
  • Authenticate: To confirm as genuine, real, or true.
  • Attest: To confirm or verify as authentic or true.

1. Validate

'Validate' can be used to confirm the validity or accuracy of something. It suggests that the information or statement has been checked and found to be true. For example:

His findings were validated by multiple sources, confirming the accuracy of his research.

2. Corroborate

'Corroborate' is used when you want to confirm or give additional support to a statement or claim. It implies strengthening the existing evidence. For instance:

The witness's testimony corroborated the victim's account, confirming the sequence of events.

3. Affirm

'Affirm' is to assert something positively or to confirm a statement as true. It reinforces the truth or validity of a fact. Example:

She affirmed her commitment to the project by agreeing to lead the team.

4. Verify

'Verify' is used to confirm the accuracy, truth, or reality of something. It involves checking and ensuring the correctness of information. Example:

Please verify your identity by providing a valid photo ID.

5. Substantiate

'Substantiate' means to confirm or establish the truth of something with concrete evidence or proof. It implies solidifying a claim. For example:

The data obtained from the experiment substantiated the hypothesis, confirming its validity.

6. Assure

'Assure' is used to confirm or give confidence to someone, dispelling any doubts or worries they may have. It reassures the recipient. Example:

The manager assured the team that their jobs were secure, confirming their stability within the company.

7. Authenticate

'Authenticate' means to confirm something as genuine, real, or true. It involves proving the legitimacy of an object or information. Example:

The signature on the document was authenticated by a handwriting expert, confirming its validity.

8. Attest

'Attest' is to confirm or verify something as genuine or true, often based on personal knowledge or experience. It involves asserting the truth of a matter. Example:

Many witnesses attested to the accused's whereabouts at the time of the crime, confirming his alibi.


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