bottom Synonyms

derriere rear end underside tush seat merchantman buttocks nates tail butt tail end undersurface freighter prat fundament keister hindquarters fanny buns fathom bum rear stern backside bed rump base behind arse posterior bedrock worst windpipe whaleboat warrantee virtuality verso valley vale seabed countryseat shipboard slade soffit hind end sole soled underbuilding airplane low-water mark