jealous
adj//ˈd͡ʒɛləs//svartsjuk, avundsjuk
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. [from 13th c.]
Protective; zealously guarding; careful in the protection of something (or someone) one has or appreciates, especially one's spouse or lover. [from 14th c.]
Envious; feeling resentful or angered toward someone for a perceived advantage or success, material or otherwise. [from 14th c.]