cave in

1 to fall down or in as a result of physical pressure the wall caved in when a tree fell on it Synonyms buckle, collapse (in), crumple, founder, give, go, go out, implode, tumble, yieldRelated Words deflate, flatten, melt, melt down; break, break down, conk (out), crash, die, fail, give out, stall; burst, shatter, smash, splinter, split; crack, crumble, pop, snapNear Antonyms inflate, rise, swell

2 to give up and cease resistance (as to a liking, temptation, or habit) I caved in to my bibliomania and bought two more books last week Synonyms bow, yield (in), give in, submit, succumb, surrenderRelated Words cater (to), gratify, indulge, wallow; acquiesce (to), concede (to); buckle (under), knuckle under; give over (to)Near Antonyms battle, breast, combat, confront, counter, defy, face, fight, meet, object, oppose, repel; thwart, withstand; reject; bridle, check, constrain, curb, inhibit, restrain, stifleAntonyms hold off, resist