Behavior or remarks that are suggestive or insinuating — giving the impression that there is a deeper or special meaning.
彼は思わせぶりな笑顔で話しかけてきた。
He approached me with a suggestive smile.
思わせぶりな態度は誤解を招きやすい。
Suggestive behavior can easily lead to misunderstandings.
彼女の思わせぶりな一言が、クラス中の噂になった。
Her offhand, suggestive remark became the talk of the class.
As a noun: words or behavior that hint at something — an insinuation or suggestive remark/action.
彼の言葉には思わせぶりが多く、本心がつかめない。
His words are full of insinuations, so it's hard to grasp his true intentions.
あの映画は結末を思わせぶりに終わらせている。
That film ends in a way that hints at the outcome rather than showing it outright.