to swear
彼は怒るとよく悪態をつく。
He often swears when he gets angry.
父さんは船の上で悪態をつくのを嫌がったけれど、これは別の話だった。
Dad hated swearing on the boat, but this was different.
助言をしてやろうとしたのに彼は私に向かって猛烈に悪態をつくだけだった。
I tried to give him some advice, but all he did was hurl vicious insults at me.