The definition of jealous is disliking when someone wants something you have.(adjective)
An example of jealous is a husband who dislikes other men looking at his wife.
The definition of jealous is guarding something that is yours.(adjective)
An example of jealous is having asked your boss to not call you at home after work.
See jealous in Webster's New World College Dictionary
Origin: ME jelous < OFr gelos < ML zelosus: see zeal
See jealous in American Heritage Dictionary 4
Origin: Middle English jelous
Origin: , from Old French gelos, jealous, zealous
Origin: , from Vulgar Latin *zēlōsus
Origin: , from Late Latin zēlus, zeal; see zeal.
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