Disposed to suspect rivalry in matters of interest and affection; apprehensive regarding the motives of possible rivals, or the fidelity of friends; distrustful; having morbid fear of rivalry in love or preference given to another; painfully suspicious of the faithfulness of husband, wife, or lover
showing extreme cupidity; painfully desirous of another's advantages; "he was never covetous before he met her"; "jealous of his success and covetous of his possessions"; "envious of their art collection"
adj Unduly concerned about the preservation of that which can be lost only if not worth keeping
If you are jealous of another person's possessions or qualities, you feel angry or bitter because you do not have them. She was jealous of his wealth You're jealous because the record company rejected your idea. + jealously jeal·ous·ly Gloria eyed them jealously
{s} envious, covetous, resentful of another's possessions or success; caused by envy or resentment; having envious or resentful feelings; zealous, vigilant; intolerant
suspicious or unduly suspicious or fearful of being displaced by a rival; "a jealous lover
If someone is jealous, they feel angry or bitter because they think that another person is trying to take a lover or friend, or a possession, away from them. She got insanely jealous and there was a terrible fight. + jealously jeal·ous·ly The formula is jealously guarded