Synonyms for Down:

adj.

below; physically lower (adjective)
inferior, descending, sinking, underneath, under, falling, downgrade, slipping.
damaged (adjective)
flawed.
dejected (adjective)
sad.
depressed (adjective)
unhappy, spiritless, heavy-hearted, dysphoric, melancholic, tristful.
low (adjective)
lower.
unhappy (adjective)
off, sad, dejected, slack, sluggish.

n.

upward, falling, onward, descending, slipping, downgrade, backward, away, sinking, up, downstairs, forward, outside, around, Against, headlong, about, back. underneath, prostrate, after, beyond, by, under, along, Resting, apart, before, below. growing, accumulative, gathering, inferior, sick, graduated, restrained, fourfold, poor, exponential, lowly, depleted. bound for something, out of order, across, inoperative, oncoming, Into, advancing, from all sides, ahead, broken, direct. best-of-breed, trample in the dust, asynchronous, backward-compatible, clickable, active, compatible, HIT, case-sensitive, bursty, topple, Antivirus, drink, knock out, tackle, throw, compatibility, upset, overturn, gulp down, trip. attack, sluggish, concede, bury, dull, cushion, slack, soft, deadlock, aggregate, off, all, chalk something up, slow, increase, assist. ill, clockwise, health, laid up, cross country, homeward, unwell, eastbound, poorly, downwind, left, counterclockwise. worse, frail, sad, unfit, failing, fragile, infectious. comedown, airlift, climb, descent, rise, come down, eject, captain, downfall, buzz, ditch, bank. thrash, smash. anymore, past, at an end, complete, exhausted, mission accomplished. battered, shot, wrecked, faulty, flawed, Trashed. dewlap, beard, camouflage, coat, brush, armour, exoskeleton, dander, armor. bouncy, ascending, skyward. metabolize, burn, go down, ingestion, digest, assimilate, stay down, metabolise, absorb. collar, beak, comb, gizzard, feather, cockscomb, bill, crest. lay, collapse, fall, flop, curl up, bunk, cuddle up, hunker down, bed down. bottom, subnormal, sunken, low-level, lower, rock bottom. come down to, cut off, be descended from, come into, bequest, come to, birthright, beneficiary, claimant, bequeath. demolish, cannibalize, choke down, chomp, champ, bolt, chow down, crunch, bite. homesick, bleak, subdued. at cost, mail order, BOGOF, open market, freemium, wholesale, retail, first refusal. plummet, plunge, descend, slip, lose your balance/footing. in, drip, eddy, flow, ebb, current, maelstrom, flush, course. paddock, moorland, Downs, meadow, green, moor, heath, field, lea, grassland. deterioration (noun)
descent.
in low spirits (noun)
melancholy, dejected, happy, spiritless, tristful, melancholic, heavy-hearted, dysphoric, wistful, dull, unhappy, desolate.

prep.

lower (preposition)
below.

Other synonyms:

first refusal, stay down, gizzard, armour, downwind, BOGOF, metabolize, dander, cockscomb, eastbound, graduated, downstairs, outside, ditch, bed down, freemium, mail order, wrecked, counterclockwise, left, clockwise, up, cuddle up, homeward, open market, growing, exoskeleton, skyward, onward, beard, away, beak, laid up, dewlap, curl up, rock bottom, headlong, backward, Trashed, accumulative, fourfold. bank, eject, faulty, exponential, sluggish, comedown, eddy, gathering, maelstrom, subnormal, cross country, airlift, poorly, downfall, sunken, unwell, low-level, flawed, bouncy, Against. slack, coat, bunk, upward, flop, collapse, come down, assimilate, prostrate, crest, back, camouflage, digest, captain. armor, ill, retail, comb, ebb, wholesale. under, bottom, buzz, lower, about, below, brush. slow, downgrade, current, climb. off, lay, throw, drip, bolt, go down, collar, apart, descent, bill. burn. flow, around. course. soft. in. consume
chow down.
flip over
overturn.
ingurgitate
choke down.
in low spirits
heavy-hearted, unhappy, desolate, sad, spiritless, wistful, dull, tristful, dysphoric, melancholic, melancholy.
quill
feather.
Other relevant words:
unwell, heath, moor, digest, sick, feather, descent, dejected, sad, unhappy, go down, ill, moorland, comedown, Downs, melancholy, come down, descend.

Usage examples for down

  1. " Help me down please. – The Way of Ambition by Robert Hichens
  2. Come on over and sit down – Gargoyles by Ben Hecht
  3. When do you go down – The Judgment House by Gilbert Parker