nonce🔊

The one or single occasion; the present reason or purpose.

(lexicography) A nonce word.

(cryptography) A value constructed so as to be unique to a particular message in a stream, in order to prevent replay attacks.

One-off; produced or created for a single occasion or use.

(British, Ireland, derogatory) A sex offender, especially one who is guilty of sexual offenses against children.

(by extension) A pedophile.

(British, Ireland, prison slang, derogatory) A police informer, one who betrays a criminal enterprise.

(British, Ireland, slang, derogatory) A stupid or worthless person.