The initial idioms of the letter W

wash down	wash hands of
wash (someone's) mouth out (with soap)	wash of
wash off	wash one's dirty linen in public
wash one's hands of	wash out
wash out of	wash over
wash overboard	wash someone away
Wash your mouth out!	wash-and-wear
washboard abs	washed out
washed up	washer
washing	washout
wishy-washy	wasn
waspish	wasp
Wassup	Wassup?
waste away	waste breath
waste no time in	waste not, want not