Informer and Undercover agent

Informer noun – A person who provides information about another's wrongdoing.

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Undercover agent and informer are semantically related In some cases you can use "Undercover agent" instead a noun "Informer".

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Nearby Words: inform, information, informed, informant, informing

Undercover agent noun – (military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors.

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Informer and undercover agent are semantically related in spy topic. You can use "Informer" instead a noun phrase "Undercover agent".