Definitions

1. noun

A person who testifies or gives evidence, especially in a court of law.

“The witness acted as an attester to the defendant’s alibi.”

2. verb

To confirm or support the truth of something, especially by giving evidence or testimony.

“The expert attested to the product’s safety features.”

3. noun

A person or thing that confirms or supports the truth or accuracy of something.

“The attester of the company’s financial reports was a reputable accounting firm.”