He was a ladies' man. A cheater. A player.

他曾是个花花公子，一个骗子，一个四处寻欢作乐的浪子。

《柯林斯英汉双解大词典》

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According to Santo, a cheater is going to cheat and a drinker is going to drink.

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Married women with children were twice as likely as unmarried women to forgive a cheater.

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Calling someone a cheater is rarely a compliment, and being cheated is never a good thing.

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