informer

word

Definition

A person who secretly gives information about someone, especially to the police or authorities, often about illegal or dishonest activities.

Usage & Nuances

Fairly formal; 'informer' can sound negative or imply betrayal, especially in criminal or police contexts. Informal or slang alternatives: 'snitch', 'rat'. Not used for neutral or positive reporting of information.

Example Sentences

The police arrested the thief with help from an informer.

basic

The informer gave information about the gang.

basic

Everyone was afraid there was an informer in the group.

basic

He acted secretly as an informer for years before anyone found out.

natural

Nobody trusts an informer once their identity is revealed.

natural

Rumors spread quickly that there might be an informer among us.

natural