Informer definition

ĭn-fôrmər
Frequency:
A person who secretly accuses, or gives evidence against, another, often for a reward.
noun
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An informant, especially one who informs against others for compensation.
noun
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One who, privy to the commission of a crime, confidentially communicates with the police or other governmental entity about it.
noun
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One who informs someone else about something.
noun
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A person who tells authorities about improper or illegal activity.
noun
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One who informs, animates, or inspires.

noun
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Other Word Forms

Noun

Singular:
informer
Plural:
informers