convex Antonyms

concave curved in straight sinking sunken scaphoid recessed patelliform navicular level umbilicate urn-shaped cotyloidal pitched backward dish-shaped planoconcave cupular cuplike saclike pouchlike pouch-shaped infundibular indented hollow concavo-convex concavo-concave cavernous bursiform bulgy biconcave arched alveolate cotyloid cupped cupulate fictive dishing dished dipped dimpled depressed dented cymbiform acetabular