1.  sit down(v = verb.motion) sit - take a seat; Array
is one way to change posture
Antonym: arise
Sample sentences: Somebody ----s; Somebody ----s PP

2.  sit down(v = verb.contact) seat, sit - show to a seat; assign a seat for; "The host seated me next to Mrs. Smith"
is one way to lay, place, pose, position, put, set
Sample sentences: Somebody ----s somebody; Somebody ----s somebody PP

3.  sit down(v = verb.contact) sit - be seated; Array
Sample sentences: Something ----s; Somebody ----s; Something is ----ing PP; Somebody ----s PP

VB  place, situate, locate, localize, make a place for, put, lay, set, seat, station, lodge, quarter, post, install, house, stow, establish, fix, pin, root, graft, plant, shelve, pitch, camp, lay down, deposit, reposit, cradle, moor, tether, picket, pack, tuck in, embed, imbed, vest, invest in, billet on, quarter upon, saddle with, load, lade, freight, pocket, put up, bag, inhabit, domesticate, colonize, take root, strike root, anchor, cast anchor, come to an anchor, sit down, settle down, settle, take up one's abode, take up one's quarters, plant oneself, establish oneself, locate oneself, squat, perch, hive, se nicher, bivouac, burrow, get a footing, encamp, pitch one's tent, put up at, put up one's horses at, keep house, endenizen, naturalize, adopt, put back, replace.

VB  be horizontal, lie, recline, couch, lie down, lie flat, lie prostrate, sprawl, loll, sit down, render horizontal, lay down, lay out, level, flatten, prostrate, knock down, floor, fell.

VB  arrive, get to, come to, come, reach, attain, come up with, come up to, overtake, make, fetch, complete, join, rejoin, light, alight, dismount, land, go ashore, debark, disembark, put in, put into, visit, cast anchor, pitch one's tent, sit down, get to one's journey's end, make the land, be in at the death, come back, get back, come home, get home, return, come in, make one's appearance, drop in, detrain, deplane, outspan, de-orbit, come to hand, come at, come across, hit, come upon, light upon, pop upon, bounce upon, plump upon, burst upon, pitch upon, meet, encounter, rencounter, come in contact.

VB  depress, lower, let down, take down, let down a peg, take down a peg, cast, let drop, let fall, sink, debase, bring low, abase, reduce, detrude, pitch, precipitate, overthrow, overturn, overset, upset, subvert, prostate, level, fell, cast down, take down, throw down, fling down, dash down, pull down, cut down, knock down, hew down, raze, raze to the ground, rase to the ground, trample in the dust, pull about one's ears, sit, sit down, couch, squat, crouch, stoop, bend, bow, courtesy, curtsy, bob, duck, dip, kneel, bend the knee, bow the knee, bend the head, bow the head, cower, recline.

baby sit, back down, bargain down, batten down, bear down, bear down on, bear down upon, beat down, bed down, belt down, blow down, bog down, boil down, bolt down, bow down, bowed down, break down, bring down, broken down, brush down, buckle down, bunk down, burn down, call down, calm down, camp down, cascade down, cast down, choke down, chop down, clamp down, clamp down on, climb down, close down, come down, come down on, cool down, count down, crack down, crack down on, cut down, dash down, deep down, die down, doss down, down, down at the heel, down easter, down feather, down in the mouth, down pat, down payment, down quark, down syndrome, down the drain, down the stairs, down town, down under, drag down, dress down, dressing down, drink down, drop down, duck down, dwindle down, ebb down, face down, fall down, fight down, flag down, flap down, flump down, flush down, freeze down, garbage down, get down, go down, go down on, goose down, grind down, gun down, hampshire down, hand down, handed down, hands down, hanging down, have down, hold down, hoot down, hose down, hunker down, hunkered down, hunt down, john l. h. down, jot down, jumping up and down, keep down, kick down, kip down, knock down, knuckle down, lay down, lay down the law, let down, letting down, lie down, live down, load down, loaded down, look down on, look down upon, low down, mark down, melt down, mow down, nail down, narrow down, pare down, peg down, pin down, pipe down, place down, plank down, play down, plonk down, plump down, plunk down, pour down, press down, press down on, pull down, push down, put down, quiet down, rain down, ram down, ratchet down, rattle down, remain down, roll down, rope down, round down, rub down, run down, sag down, scale down, send down, set down, settle down, shake down, shoot down, shout down, shower down, shut down, simmer down, sit, sit back, sit by, sit down strike, sit down with, sit in, sit in on, sit on, sit out, sit tight, sit up, sleek down, slick down, slide down, slim down, slow down, slowing down, sluice down, split down, sponge down, stamp down, stand down, stare down, steady down, step down, stepping down, strike down, strip down, swan's down, swill down, swoop down upon, take down, take lying down, talk down, tamp down, tear down, tearing down, throw down, thumbs down, tie down, tone down, toned down, touch down, track down, tramp down, tread down, trim down, tune down, turn down, turn thumbs down, turn upside down, up and down, upside down, vote down, wash down, water down, watered down, wear down, weigh down, weighed down, weight down, weighted down, whack down, whittle down, wolf down, write down, written down