drinking, gulping, guzzling, hoisting, imbibing, knocking back, pounding (down), quaffing, sipping, slugging (down), slurping, supping, swigging, swilling, tossing (down or off)
lapping, licking, suckingconsuming, downing, ingurgitating, killing, mouthing (down), putting awaynipping, tipplingpledging, toasting, wining