[adjective] - not able to be questioned or improved; final, complete, or besta definitive decision/judgment/rulingThere are no definitive answers/solutions to this problem.The police have no definitive proof of her guilt.The document is the most definitive (= complete) statement of party policy ever.He's written the definitive (= best and most complete) guide to Britain's Lake District.For me, the definitive (= best) production of 'Hamlet' was one I saw in 1985.
DEFINITIVE
Meaning of DEFINITIVE in English
Cambridge English vocab. Кембриджский английский словарь. 2012