Table of Contents POS
WORDNET DICTIONARY
THESAURUS
ROGET THESAURUS

RELATED WORDS : act out acting out air out all get out all out answer back ask out average out babble out back back and fill back and forth back away back brace back breaker back burner back channel back circle back country back door back down back end back entrance back exercise back fire back judge back matter back number back of beyond back off back pack back porch back room back saw back scratching back seat back stairs back street back talk back to back back tooth back up back way bail out bale out bang out bat out bawl out bawling out bear out beat back beat out belly out belt out bite out blab out black out blacken out blank out blare out blat out blaze out blazon out bleach out bleep out block out blossom out blot out blotted out blow out blow out of the water blubber out bluff out blunder out blurt out bolt out bomb out boom out boot out borne out bottom out bounce back bounce out bow out bracket out branch out brave out brazen out break one's back break out breathe out breathing out bring back bring out bug out bulge out burn out burst out bush out buy back buy out call back call out camp out cancel out carry back carry out carrying out cash out cast out catch out cavern out ceding back centrifuge out chalk out check out chew out chewing out chicken out chill out choke back chuck out churn out clapped out clean out clear out clock out close out comb out come back come back at come out come out of the closet coming back coming out conk out contract out cook out cop out copy out core out cough out count out crank out crap out crawfish out crop out cross out crowd out crush out cry out cry out for cull out cuss out cut back cut it out cut out cutting out date back day in and day out day in day out deal out dealt out deck out decked out die back die out dig out dine out dish out dole out doled out dope out double back drag out dragged out draw back draw out drawn out dress out drive back drive out drop back drop out drown out drum out dry out duck out eat out ebb out edit out eke out even out factor out fade out fag out fall back fall out falling out fan out far out farm out fat back fatten out feed back feel out feeling out ferret out fig out fight back figure out file out fill out filter out find out finish out first in first out fish out of water fit out fitted out fizzle out flake out flanker back flare out flash back flat out flatten out flesh out fleshed out flip out flood out flow out flunk out follow out force back force out forcing out fork out foul out freak out freeze out from way back get back get back at get out get out of give back give out go all out go back go back on go back over go out gouge out grind out gross out ground out grub out hammer out hand out hang back hang out hark back hash out hear out help out hew out hide out hire out hold back hold out hold out on hole out holler out hollow out hop out inside out invite out iron out jump out jut out keep back keep out key out kick back kick out kit out knock back knock out knocked out lash out last in first out last out lay out leaf out leak out lean back leap out leave out leaving out let out let the cat out of the bag lift out light out live out lock out log out look back look out look out on look out over luck out mail out make out map out march out mark out max out measure out mellow out mete out meted out move back move back and forth move out muster out nose out odd man out ooze out opt out out out and away out and out out cold out front out group out in out in the open out loud out of out of action out of bounds out of breath out of character out of commission out of control out of date out of doors out of favor out of focus out of gear out of hand out of humor out of it out of joint out of keeping out of kilter out of line out of luck out of nothing out of order out of phase out of place out of play out of pocket out of practice out of print out of proportion out of reach out of season out of shape out of sight out of sorts out of stock out of the blue out of the ordinary out of the question out of the running out of thin air out of this world out of touch out of true out of use out of view out of wedlock out of whack out of work out on a limb out or keeping out to pan out parcel out parceled out pass out pat on the back pay back pay out paying back peal out peter out phase out pick out pig out pip out play back play out played out plump out point out pointing out poke out pooch out poop out pop out portion out pour out press out prim out printing out pry out psych out puff out pull back pull out pull out all the stops pulling out punch out push back push out put back put out put out feelers puzzle out rag out rain out ration out ravel out reach out rear back reason out relation back rent out report out ride out rig out rigged out ring out rip out roll back roll out root out rough out round out rout out rub out rule out run out running back rush out sack out sally out scarf out scent out scoop out score out scratch out screen out seek out sell out send back send out separate out set back set out shared out shell out shoot out shout out shrink back shut out sieve out single out sink back sit back sit out sleep out slide back slip back slip out of smell out smoke out smooth out snap back snap out of it sneak out sniff out snuff out sort out sound out sounding out spaced out speak out spell out spew out spike out spill out spin out spit out spread out squeeze out squirm out of stake out stamp out stand back stand out start out step out stick it out stick out sticking out stink out straight out straighten out stretch out stretched out strike back strike out string out strung out stub out suck out suss out swear out sweat it out sweep out swing out take back take out talk back talk out of tap out tear out thin out think back think out thrash out throw back throw out throw out of kilter thrust back thrust out thump out time out time out of mind tire out tog out top out toss back toss out tough it out travel back and forth trick out tricked out trim back trip out trot out trump out try out tucker out tuckered out turf out turn back turn inside out turn out turned out usher out vege out vote out walk out walk out of wash out washed out watch out watch out for water back watteau back way out wear out weed out well out well thought out white out win back win out winkle out winnow out wipe out wiped out work out working out worm out of worn out wring out write out zonk out

WORDNET DICTIONARY

Verb back out has 2 senses

• back out(v = verb.motion) Array - move out of a space backwards; "He backed out of the driveway"
is one way to back
Sample sentences:
Somebody ----s
Somebody ----s PP

• back out(v = verb.communication) back away, crawfish, crawfish out, pull back, pull in one's horns, retreat, withdraw - make a retreat from an earlier commitment or activity; "We'll have to crawfish out from meeting with him"; "He backed out of his earlier promise"; "The aggressive investment company pulled in its horns"
Sample sentence:
Somebody ----s

THESAURUS

back out

abandon, abjure, back down, backpedal, backwater, beat a retreat, beg off, boggle, chicken, chicken out, climb down, crawfish out, cry off, deny, depart from, desert under fire, disavow, discard, disclaim, disengage, disown, draw back, draw off, drop out, eat crow, eat humble pie, evacuate, fall back, falter, forsake, forswear, funk, funk out, get cold feet, give ground, give place, go back, go back on, jettison, jilt, leave, leave behind, leave flat, lose courage, maroon, move back, pull back, pull out, quit, quit cold, recant, renege, renounce, repudiate, resile, retire, retract, retreat, revoke, run back, say goodbye to, scuttle, skedaddle, stand back, stand down, swallow, take back, take leave of, throw over, unsay, vacate, welsh, withdraw

ROGET THESAURUS

back out

Regression

VB recede, regrade, return, revert, retreat, retire, retrograde, retrocede, back out, back down, balk, crawfish, crawl, withdraw, rebound, go back, come back, turn back, hark back, draw back, fall back, get back, put back, run back, lose ground, fall astern, drop astern, backwater, put about, backtrack, take the back track, veer round, double, wheel, countermarch, ebb, regurgitate, jib, shrink, shy, turn tail, turn round, turn upon one's heel, turn one's back upon, retrace one's steps, dance the back step, sound a retreat, beat a retreat, go home.

For further exploring for "back out" in Webster Dictionary Online