Part of speech:
Any danger or warning signal; specif., a red lamp, flare, etc.
An event provoking war or used as a pretext for making war
Find another word for red-flag. In this page you can discover 5 synonyms, antonyms, idiomatic expressions, and related words for red-flag, like: red-light, casus-belli, red-rag, sore-point and delicate subject.