jealously opposed to the personal independence of, or to any influence other than one's own upon, a child, spouse, etc.

desirous of possessing, esp. excessively so

Young children are so possessive they will not allow others to play with their toys; a possessive lover.

of or pertaining to possession or ownership.

Grammar .

indicating possession, ownership, origin, etc. His in his book is a possessive adjective. His in The book is his is a possessive pronoun.

noting or pertaining to a case that indicates possession, ownership, origin, etc., as, in English, John's in John's hat.

the possessive case.

a form in the possessive.

adjective

acquisitive , avaricious , controlling , craving , desirous , dominating , grabby , grasping , hoggish , selfish , clutching