Unduly concerned about the preservation of that which can be lost only if not worth keeping.

Apprehensive; anxious; suspiciously watchful.

Demanding exclusive devotion; intolerant of rivalry.

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.

in the sense of suspicious. (Julius Caesar)

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"

suspicious or unduly suspicious or fearful of being displaced by a rival; "a jealous lover"

resentfully envious or suspicious of rival influences.