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1.
jealousy, envy
The green-eyed monster was there when an acquaintance of my friend visited his house and it took a toll on his relationship with his girlfriend.
by The Return of Light Joker June 01, 2011
 
2.
1. jealousy

2. to act out of character because you are jealous

3. to be overwhelmed with jealousy
When Lisa saw her crush with another girl she turned into the green-eyed monster.
by Lisa DiRusso October 01, 2007
 
3.
A term used to describe jealousy.
origin is from Othello
Jan was bitten by the green eyed monster when she saw Jill with David.
by Brian M White November 22, 2007