adjective, adverb · to have no choice or alternative in a situation

我卖掉这辆车也是出于无奈。

adverb · describing a state of feeling helpless or having no choice while performing an action

他只能无奈地苦笑。

adverb · used as a conjunction to introduce a factor that prevents something from happening

我很想参加聚会，无奈工作太忙，走不开。