stick to one's guns
to defend an action or opinion despite an unfavorable reaction

[TahlilGaran] Dictionary of Contemporary English ▲

stick to guns
stick to (your) guns
[British, American & Australian, informal, American, informal]
to refuse to change your ideas although other people try to make you change them.
David's family were against him becoming an actor but he stuck to his guns.

Stand by your guns and don't let them talk you into working full time if you don't want to.

[TahlilGaran] English Idioms Dictionary ▲

stick to one's guns
to defend an action or opinion despite an unfavorable reaction
Our boss is sticking to his guns on his decision to fire the manager of the store.

We stuck to our guns during the meeting and asked for more time to consider the proposal.

[TahlilGaran] English Idioms Dictionary ▲

stick to one's guns
v. phr. To hold to an aim or an opinion even though people try to stop you or say you are wrong.
People laughed at Columbus when he said the world was round. He stuck to his guns and proved he was right.
At first the boss would not give Jane the raise in pay she wanted, but she stood by her guns and he gave it to her.
Compare: STAND ONE'S GROUND.

[TahlilGaran] English Idioms Dictionary ▲