caveEnglishOxford American Thesauruscave noun there is a cave at the bottom of the cliff: cavern, grotto, hollow, cavity, pothole, underground chamber, gallery, tunnel, dugout.□ cave in1 the roof caved in: collapse, fall in, give, give way, crumble, crumple, disintegrate, subside, fall down, sag, slump. ▷antonyms hold up. 2 the manager caved in to their demands: yield, surrender, submit, succumb, back down, make concessions, capitulate, give up/in, raise/show the white flag; acquiesce, agree, concur, approve, assent; informal throw in the towel, throw in the sponge. ▷antonyms hold out against.word linkscavespeleology; North American spelunking exploration of cavesspeleology, potholer explorer of caves