informer

n.

An informant, especially one who informs against others, often for compensation.

noun

One who gives incriminating information about others: informant, tattler, tattletale. Informal rat, tipster. Slang fink, snitch, snitcher, squealer, stoolie, stool pigeon. See knowledge/ignorance, law.

One who, on a confidential basis, gives information about some wrongdoing to the police or other governmental authorities.

Note: click on a word meaning below to see its connections and related words.

The noun has one meaning:

Meaning #1: one who reveals confidential information in return for money
  Synonyms: betrayer, rat, squealer, blabber

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Dansk (Danish)
n. - meddeler, anmelder, angiver, stikker

Nederlands (Dutch)
verklikker, informant, geheim agent

Français (French)
n. - dénonciateur (péj), (Jur) délateur

Deutsch (German)
n. - Informant, Denunziant

Ελληνική (Greek)
n. - πληροφοριοδότης, καταδότης

Italiano (Italian)
delatore

Português (Portuguese)
n. - informante (m) (f), delator (m)

Русский (Russian)
осведомитель

Español (Spanish)
n. - denunciante, delator, confidente

Svenska (Swedish)
n. - angivare, sagesman, källa, informant (vetensk.)

中文（简体）(Chinese (Simplified))
密告者, 通知的人, 控告的人

中文（繁體）(Chinese (Traditional))
n. - 密告者, 通知的人, 控告的人

한국어 (Korean)
n. - 통지자, 밀고자, 정보 제공자

日本語 (Japanese)
n. - 通知者, 密告者, 情報屋, 通報者

العربيه (Arabic)
‏(الاسم) الواشي, المخبر وبخاصه المحترف‏

עברית (Hebrew)
n. - ‮מודיע, מלשין‬

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