WordNet sense 1 (suspicious or unduly suspicious or fearful of being displaced by a rival):

green-eyed, overjealous

WordNet sense 2 (having or showing distrust):

distrustful

WordNet sense 3 (showing extreme cupidity; painfully desirous of another's advantages):

covetous, envious

WordNet sense 4 (having or expressing desire for something):

desirous, wishful