Definition of "jealous" in English

adjective

1. Suspecting rivalry in love; troubled by worries that one might have been replaced in someone's affections; suspicious of a lover's or spouse's fidelity.

   • jealous rage
   • jealous lover
   • She gave him a jealous look.

2. Protective; zealously guarding; careful in the protection of something (or someone) one has or appreciates, especially one's spouse or lover.

3. Envious; feeling resentful or angered toward someone for a perceived advantage or success, material or otherwise.

   • be jealous of someone/something
   • He was jealous of his friend’s success.
   • I'm jealous because I'm single.

4. Suspicious; apprehensive.

verb

1. (ambitransitive, slang) To harass or attack (somebody) out of jealousy.

2. (transitive, Australian Aboriginal) To deliberately make (someone) jealous of another person's (often their partner's) associations with other people.