1
to refuse;to reject;to dismiss;to turn down;to decline
彼女は彼のアドバイスを断りそうだ。なぜなら彼女は彼が好きではないからだ。
She is likely to refuse to follow his advice, because she does not like him.
2
to inform;to give notice;to ask in advance (and get approval);to get permission
予め断りますが、今日のブログは面白くないよ〜。
Just to warn you in advance, today's blog is no fun.
3
to ask leave;to excuse oneself (from)
彼は断りなく私の部屋に入ってきた。
He entered my room without permission.
Other forms
断わる 【ことわる】