Big Huge Thesaurus

fundament

noun

• basis
• base
• foundation
• groundwork
• cornerstone
• buttocks
• nates
• arse
• butt
• backside
• bum
• buns
• can
• hindquarters
• hind end
• keister
• posterior
• prat
• rear
• rear end
• rump
• stern
• seat
• tail
• tail end
• tooshie
• tush
• bottom
• behind
• derriere
• fanny
• ass
• foot
• substructure
• understructure
• assumption
• body part
• support
• supposal
• supposition

sounds kind of like

• foam at the mouth
• fondant
• fountainhead