protuberance Antonyms

sinkage recess overproduction intaglio ingrowth indenture indention indentation indent scallop sipe sinus alveolation sinkhole heavyheartedness punch bowl cavitied trough trench sulcus indenting impression ichnolite crenel concavity bowl basin armpit antrum alveolus alcove dent depression dimple ichnite hollow hole groove follicle embrasure dip dint abjectness