Definitions from Wiktionary (jealous)

▸ adjective:  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.
▸ adjective:  Protective; zealously guarding; careful in the protection of something (or someone) one has or appreciates, especially one's spouse or lover.
▸ adjective:  Envious; feeling resentful or angered toward someone for a perceived advantage or success, material or otherwise.
▸ adjective:  Suspicious; apprehensive.
▸ verb:  (ambitransitive, slang) To harass or attack (somebody) out of jealousy.
▸ verb:  (transitive, Australian Aboriginal) To deliberately make (someone) jealous of another person's (often their partner's) associations with other people.

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