bottom Synonyms

base underside derriere undersurface rear end tail rear nates nadir tush hindquarters merchantman butt buttocks foundation freighter fundament tail end prat keister fanny fathom buns bum foot stern root backside rump behind seat bed arse posterior airplane low-water mark warrantee whaleboat starfish seabed windpipe worst steamboat bedrock stail empennage sole axiological tooshie soled