authenticate
word
Definition
To prove that something is real, true, or genuine; to confirm the identity of a person or the validity of a document, often using official or electronic means.
Usage & Nuances
Common in formal, technical, and legal contexts. Often used with identity ('authenticate a user') or original objects/documents ('authenticate a painting'). In IT, means verifying who you are (e.g., passwords, codes). Not the same as 'authorize' (which means giving permission).
Example Sentences
You must authenticate your account before logging in.
basic
Experts authenticate ancient coins to make sure they are real.
basic
Please authenticate this document with your signature.
basic
Banks use security questions to help authenticate your identity online.
natural
If you can't authenticate yourself, you won't get access to your email.
natural
Collectors always want to authenticate rare items before buying them.
natural