Synonyms for Swill:

n.

tipple, drink like a fish, barhop, hold your drink, belt down, abuse, sober up, have a skinful, knock back. nonsense, stuff, spiel, gobbledegook, rubbish, Double Dutch, mumbo jumbo, ravings, drivel. dog biscuit, forage, feedbag, fishmeal, cud, fodder, corn, feed, bone meal, birdseed. channel, dash, course, deepen, catch, crest, burst, come in, cast up, break. scrub, Disinfect, wash, flush out, swab, hose down, rinse, wash off, mop. garbage (noun)
slop, rubbish, waste, slops, trash.
nasty liquid (noun)
garbage, drink, wash, guzzle, rinse.
slops (noun)
waste, garbage, trash.
swill (noun)
pigwash, pigswill, swill down, slop, slops.
waste (noun)
waste.

v.

consumption (verb)
slop.
drink (verb)
drink, carouse, quaff, gulp, guzzle.

Other synonyms:

Disinfect, wash off. hose down, flush out. rinse. swab, mop, scrub. wash. drink down
quaff.
Other relevant words:
gobbledegook, garbage, rubbish, pigswill, mop, knock back, swill down, forage, trash, waste, wash, pigwash, slop, rinse, fodder, mumbo jumbo, stuff, tipple, corn, slops, feed, nonsense.