green–eyed monster noun
Meaning:
the green-eyed monster
informal : jealousy thought of as a monster that bites or attacks people
▪ She was bitten by the green-eyed monster. [=she became jealous] ▪ The green-eyed monster reared its (ugly) head [=I became jealous] when my ex-wife began dating someone else.
▪ She was bitten by the green-eyed monster. [=she became jealous] ▪ The green-eyed monster reared its (ugly) head [=I became jealous] when my ex-wife began dating someone else.
