stick to your guns
US /stɪk tu jʊər ɡʌnz/
UK /stɪk tu jʊər ɡʌnz/

1.
自分の意見を貫く, 主張を曲げない
to refuse to change your mind about something even when other people try to persuade you that you are wrong
:
•
Despite strong opposition, she decided to stick to her guns and pursue her original plan.
強い反対にもかかわらず、彼女は自分の意見を貫き、元の計画を追求することに決めた。
•
He's the kind of person who will always stick to his guns, no matter what.
彼は何があっても常に自分の意見を貫くタイプだ。