Choose the one which is nearest in meaning to BAFFLE.

Frustrate is the synonym of Baffle.
Baffle means to make someone to becompletely unable to understand or explain something. For example, she was baffled by his unusual behaviour. Insult is a derogatory comment or action. 'Frustrate' refers to a state of being angry and less confident. 'Defame' is to harm a person's or group's reputation by stating negative things about them. 'Antagonize' means to make someone dislikeyou.