1. (noun) sink
plumbing fixture consisting of a water basin fixed to a wall or floor and having a drainpipe
Synonyms: sump, sinkhole, swallow hole, cesspool, cesspit
Antonyms: source, float, swim
2. (noun) sink
(technology) a process that acts to absorb or remove energy or a substance from a system
Synonyms: sump, sinkhole, swallow hole, cesspool, cesspit
Antonyms: source, swim, float
3. (noun) sinkhole, sink, swallow hole
a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof
Synonyms: cesspit, sump, sinkhole, sink, cesspool, swallow hole
Antonyms: source, float, swim
4. (verb) cesspool, cesspit, sink, sump
a covered cistern; waste water and sewage flow into it
Synonyms: sump, sinkhole, sink, cesspool, cesspit, swallow hole
Antonyms: source, swim, float
5. (verb) sink, drop, drop down
fall or descend to a lower place or level
Synonyms: unload, settle, leave out, dribble, dip, send packing, drop off, dismiss, drop down, sink, drip, go down, deteriorate, lapse, slide down, overleap, strike down, overlook, throw, cast, fell, go under, subside, cut down, neglect, devolve, expend, send away, set down, flatten, pass, swing, bury, put down, throw off, throw away, dangle, drop, shake off, discharge, spend, fall off, knock off, miss, pretermit, degenerate, cast off, slump, shed, omit
Antonyms: source, float, swim
6. (verb) sink
cause to sink
Synonyms: drop, subside, settle, fall off, drop down, go down, go under, dip, slump, slide down, pass, lapse, bury
Antonyms: source, float, swim
7. (verb) sink, pass, lapse
pass into a specified state or condition
Synonyms: run, perish, fall back, elapse, go past, make pass, lead, top, put across, go by, draw, evanesce, backslide, occur, die, drop down, subside, snuff it, excrete, turn over, go, spend, slide by, recidivate, fade, hand, legislate, happen, egest, exit, exceed, fleet, pass away, slip away, drop dead, overstep, slide down, make it, authorize, pop off, expire, regress, devolve, cash in one's chips, kick the bucket, retrogress, give, fall out, hap, slip by, go on, sink, eliminate, croak, lapse, pass off, give-up the ghost, return, blow over, take place, fall off, overhaul, go through, reach, dip, communicate, go under, come about, choke, pass by, go across, overtake, transcend, glide by, relapse, extend, decease, fall, pass, clear, drop, conk, travel by, bury, buy the farm, go down, pass along, authorise, go along, surpass, guide, slump, settle, pass on
Antonyms: source, float, swim
8. (verb) sink, settle, go down, go under
go under, "The raft sank and its occupants drowned"
Synonyms: settle, square up, dip, make up, patch up, nail down, drop down, sink, settle down, go down, square off, decline, lapse, slide down, descend, come down, root, determine, crash, steady down, go under, subside, reconcile, fall, finalise, ensconce, wane, get back, pass, bury, adjudicate, conciliate, decide, drop, resolve, locate, fall off, go by, set, finalize, slump, take root
Antonyms: source, swim, float
9. (verb) sink, subside
descend into or as if into some soft substance or place
Synonyms: drop, subside, settle, fall off, drop down, go down, go under, dip, slump, lessen, sink, slide down, pass, lapse, bury
Antonyms: source, swim, float
10. (verb) dip, sink
appear to move downward
Synonyms: drop down, lapse, dim, go down, dunk, go under, settle, drop, sink, subside, souse, slide down, duck, dip, fall off, pass, douse, plunge, slump, bury
Antonyms: source, swim, float
11. (verb) slump, fall off, sink
fall heavily or suddenly; decline markedly
Synonyms: drop down, lapse, go down, slouch, go under, settle, drop, correct, decline, subside, slide down, dip, sink, fall off, pass, fall away, slump, bury
Antonyms: source, float, swim
12. (verb) slump, slide down, sink
fall or sink heavily
Synonyms: drop down, lapse, go down, slouch, go under, settle, drop, correct, decline, subside, slide down, dip, sink, fall off, pass, slump, bury
Antonyms: source, float, swim
13. (verb) bury, sink
embed deeply
Synonyms: lapse, go down, swallow, slide down, drop down, go under, settle, eat up, entomb, sink, subside, immerse, swallow up, drop, dip, lay to rest, forget, slump, fall off, pass, inhume, inter, bury
Antonyms: source, float, swim
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Synonyms and Antonyms of sink 
