possessive /pəˈzɛs.ɪv/adjective 3noun 2forms 3 adjective3 •Of or pertaining to ownership or possession. •Unwilling to yield possession of.He is very possessive of his car. •Indicating ownership, possession, origin, etc. noun2 •The possessive case. •A word used to indicate the possessive case.Take the rule about pronouns and possessives that Mr. Keegan cited in his challenge to the testing service. — 2023 formspossessives · more possessive · most possessive