convexity Antonyms

concavity abjectness sinus sipe recess pothole overproduction notch intaglio sulcus trench trough blues cavitied bleakness blahs punch bowl heavyheartedness sinkhole indenture indention indentation alcove alveolus antrum armpit basin bowl cavity crenel dent depression dimple dint embrasure follicle groove indenting indent alveolation