THESAURUS
unpossessive
altruistic, committed, consecrated, dedicated, devoted, disinterested, humble, modest, sacrificing, self-abasing, self-abnegating, self-abnegatory, self-denying, self-devoted, self-effacing, self-forgetful, self-immolating, self-neglectful, self-neglecting, self-renouncing, self-sacrificing, self-unconscious, selfless, unacquisitive, unpretentious, unselfish, unsparing of self
