Definition of jealous
1 : hostile toward a rival or one believed to enjoy an advantage : envious His success made his old friends jealous. They were jealous of his success.
2a : intolerant of rivalry or unfaithfulness jealous of the slightest interference in household management— Havelock Ellis
b : disposed to suspect rivalry or unfaithfulness a jealous husband
3 : vigilant in guarding a possession new colonies were jealous of their new independence— Scott Buchanan
Love words? Need even more definitions?Merriam-Webster unabridged
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