a posteriori,
1
- relating to or denoting reasoning or knowledge which proceeds from observations or experiences to the deduction of probable causes（论证, 知识）基于观察（或经验）推断可能的起因的。
1.1
- (in general use) of the nature of an afterthought or subsequent rationalization（普通用语） 事后思考本质的; 事后合理探究的。
1
- in a way based on reasoning from known facts or past events rather than by making assumptions or predictions基于事实（或往事）推断（而不是猜想预测）地。
1.1
- sentence adverb informal with hindsight; as an afterthought〈非正式〉事后聪明地; 事后有想法地。
词源
early 17th cent.: Latin， 'from what comes after'.