green-eyed monster

green-eyed monster idiom
Jealousy, as in Bella knew that her husband sometimes succumbed to the green-eyed monster. This expression was coined by Shakespeare in Othello (3:3), where Iago says: “O! beware, my lord, of jealousy; it is the green-eyed monster which doth mock the meat it feeds on.” It is thought to allude to cats, often green-eyed, who tease their prey. Also see green with envy.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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