definitive

1. ADJ Something that is definitive provides a firm conclusion that cannot be questioned. 确定的

No one has come up with a definitive answer as to why this should be so. 至于为什么该这样，还没有人给出明确的答复。

2. definitivelyADV 确定地

Law enforcement officials had definitively identified Blanco as a potential suspect. 执法官员明确认为布兰科是个可能的嫌疑犯。

3. ADJ A definitive book or performance is thought to be the best of its kind that has ever been done or that will ever be done. 权威性的

...Ian Macdonald's definitive book on The Beatles. …伊恩·麦克唐纳写的有关甲壳虫乐队的最权威的书。