serving to settle or decide a question; decisive; convincing

conclusive evidence.

tending to terminate; closing.

adjective

inconclusive , indefinite

adjective

absolute , all out , clear , clinching , cogent , compelling , convincing , deciding , decisive , demonstrative , determinant , determinative , flat out * , incontrovertible , indisputable , irrefragable , irrefrangible , irrefutable , irrevocable , litmus test * , precise , resolving , revealing , settling , straight out , telling , ultimate , unambiguous , unanswerable , unarguable , unconditional , undeniable , unmistakable , unquestionable , what you see is what you get , crucial , authoritative , final , official , sanctioned , standard , certain , definite , definitive , last , obvious