causing thought about interesting subjects

The programme will take a detailed and provocative look at the problem of homelessness. 这个节目将以启发性的眼光详细审视无家可归这个问题。

causing an angry reaction, usually intentionally

a provocative question/remark 挑衅性的问题／评论

In a deliberately provocative speech, she criticized the whole system of government. 在一次有意挑衅的演说中，她把整个政府体制批判了一番。

If behaviour or clothing is provocative, it is intended to cause sexual desire.

She slowly leaned forward in a provocative way. 她挑逗地慢慢向前弯下身。