| wheat bread | | | |
| wheel away | | | |
| wheel out | | | |
| wheels are turning | | | |
| wheel within a wheel | | | |
| when all is said and done | | | |
| when Hell freezes over | | | |
| when in Rome, do as the Romans do | | | |
| when it comes to | | | |
| when it's at home | | | |
| when pigs fly | | | |
| when push comes to shove | | | |
| when the chips are down | | | |
| when they go low, we go high | | | |
| when two Sundays come together | | | |
| when two Sundays meet | | | |
| where got | | | |
| where's the beef | | | |
| where's the fire | | | |
| where's the lie | | | |
| which foot the shoe is on | | | |
| which way the wind is blowing | | | |
| while we're young | | | |
| whip hand | | | |
| whip into shape | | | |
| whips and jingles | | | |
| whip the cat | | | |
| whip through | | | |
| whip up a storm | | | |
| whirl | | | |
| whisk away | | | |
| whiskey dick | | | |
| whisk off | | | |
| whisper campaign | | | |
| whistle Dixie | | | |
| whistle for | | | |
| whistle in the dark | | | |
| whistle in the wind | | | |
| whistle past the graveyard | | | |
| whistle-stop | | | |
| whistle walk | | | |
| white bread | | | |
| white coat hypertension | | | |
| white hat | | | |
| white-knuckle | | | |
| white lie | | | |
| white magic | | | |
| white marriage | | | |
| white on rice | | | |
| white pee | | | |
| white rabbit | | | |
| white rider | | | |
| white satin | | | |
| white sheep | | | |
| white trash | | | |
| white trashery | | | |
| Whitman's sampler | | | |
| who are you telling | | | |
| whole ball of wax | | | |
| whole box of tricks | | | |
| whole cloth | | | |
| whole enchilada | | | |
| whole package | | | |
| whole shebang | | | |
| whole shooting match | | | |
| whomp on | | | |
| whoop ass | | | |
| whoop-ass | | | |
| whoop it up | | | |
| who shot John | | | |
| who's 'she', the cat's mother | | | |
| who's who | | | |
| who wants to know | | | |
| why in God's name | | | |
| why in the world | | | |
| why in time | | | |
| why on Earth | | | |
| wicked tongue | | | |
| wide awake | | | |
| wide berth | | | |
| wide of the mark | | | |
| wide open | | | |
| widow-maker | | | |
| widow's mite | | | |
| wild-goose chase | | | |
| wild horses | | | |
| willful ignorance | | | |
| willing horse | | | |
| willow in the wind | | | |
| will the real someone please stand up | | | |
| willy-nilly | | | |
| win back | | | |
| win by a nose | | | |
| wind at one's back | | | |
| wind back the clock | | | |
| wind down | | | |
| wind off | | | |
| window on the world | | | |
| window-shopping | | | |
| wind tunnel testing | | | |