Englishknuckle
verb
□ knuckle under
bombing does not always make the victims knuckle under:
surrender, submit, capitulate, give in, give up, yield, give way, succumb, climb down, back down, quit, admit defeat, lay down one's arms, be defeated, be overcome, acquiesce, accede, accept, defer;
informal throw in the towel, raise the white flag, throw in the sponge.
▷antonyms resist.
knuckle Oxford Dictionary of English