VERB [usually passive]使后悔;使愧疚 If you are chastened by something, it makes you regret that you have behaved badly or stupidly. 使后悔;使愧疚 [formal] [Also beV-ed + into]
He has clearly not been chastened by his thirteen days in detention. [beVERB-ed + by]
显然,13天拘留并没能让他悔过自新。
A chastened Agassi flew home for a period of deep contemplation. [VERB-ed]