Informant vs Spy

When to use each in English, with meaning, register, and examples.

 InformantSpy
MeaningA person who gives information, especially to the police.A person who secretly watches or gathers information about others.
CEFR level-C1
Part of speechnoun
Usage notesCommonly used in legal and police contexts. Be careful using it informally, as it can imply secrecy or betrayal.Use 'spy' in both informal and formal contexts. It can refer to espionage or simply watching someone closely. It's not appropriate in casual conversations unless joking.

Frequently asked questions: Informant vs Spy

What's the difference between "Informant" and "Spy"?

"Informant" means: A person who gives information, especially to the police. "Spy" means: A person who secretly watches or gathers information about others.

When should I use "Informant" and "Spy"?

They can all be used in everyday English.

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