turncoat

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun a disloyal person who betrays or deserts his cause or religion or political party or friend etc.

Etymology

A compound of turn + coat, reportedly derived from the sometime military practice of wearing uniform coats that were lined in material of a contrasting color, and which could be worn inside out to present a different appearance.

In classic literature

Synonyms

deserter, apostate, renegade, recreant, ratter

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