His wild, unrestrained personality caused him a lot of suffering.
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放荡 is a harsh, judgmental word, especially when directed at women. 放荡不羁 is a set phrase meaning 'wild and unrestrained' that can carry a more romantic, literary tone - think of a free-spirited poet.
usage
Contrast with 开放 (open-minded) which is neutral/positive. 放荡 is always negative or at best edgy-literary.
