Attest: meaning, definitions and examples

Use 'attest' when you need to confirm something is true or genuine, usually based on personal knowledge or expertise.

• I can attest to his remarkable cooking skills.
• The witness attested that she saw the suspect at the scene of the crime.

Use 'endorse' when you support or approve someone or something publicly, especially when it relates to products, services, or official policies.

• The celebrity endorsed the new mobile phone brand.
• The candidate was endorsed by many local politicians.

Use 'vouch for' when you personally guarantee or confirm the good character, condition, or quality of someone or something.

• I can vouch for his honesty and reliability.
• She vouched for the quality of the restaurant's food.

Use 'assert' when you want to state something confidently and forcefully as a fact, often without need for proof.

• He asserted his innocence throughout the trial.
• She asserted that the policy was unfair.

Officially or formally verify something, often used in legal or professional settings.

• The notary will attest your signature
• I can attest to his good character

Verify the truth or accuracy of something, commonly used in everyday situations and communications.

• Can you confirm our meeting time? The test results confirm the diagnosis

Show or prove something clearly, often through actions or evidence, frequently used in educational or practical contexts.

• The teacher will demonstrate the experiment
• She demonstrated her commitment by working late

Provide evidence to support or prove the truth of something, generally used in formal writing or speech.

• You need to substantiate your claims with more evidence
• His research helped substantiate the theory