opinionated

adj. 固执已见的

operatic, operatically, operating system, operating-table, operating-theatre, operation, operational, operations room, operative, operator, operetta, ophthalmic, ophthalmic optician, ophthalmologist, ophthalmology, ophthalmoscope, opiate, opine, opinion, opinion poll, opium, opossum, opp, opponent, opportune, opportunely, opportunism, opportunist, opportunistic, opportunity, oppose, opposed, opposite, opposition, oppress, oppress-ively, oppressed, oppression, oppressive, oppressor,