Mouchard

Part of speech: noun

Pronunciation: /ˈmuːʃɑː/

Definitions

1. A person characterized by their role in clandestinely revealing secrets or reporting on others' private affairs for ulterior motives
2. Someone who secretly collects and reports information about others without their knowledge
3. A person who covertly observes and passes on private activities to an authority or interested party

Etymology: French "mouchard" is a informer or spy, and its roots lie in the humble housefly. The French verb "moucher" originally meant to wipe or snuff out a candle wick, and from there "mouche" (fly) came to be linked with the idea of something that watches closely and unobtrusively. The "-ard" ending is a common French suffix forming nouns for people or things with a particular habit or role, so "mouchard" describes someone who keeps close watch on others. English borrowed the word directly from French, and it kept the sense of a secret informant. Because the source's first-use details are not confirmed here, the borrowing is best understood as a fairly modern adoption of a French term rather than an ancient one. The word's core picture, a fly hovering unseen at the edge of a room, remains the clearest way to understand why it means someone who quietly reports on others.

Synonyms: informer, snitch, tattletale, snoop, spy