1.  single out(v = verb.cognition) - select from a group; "She was singled out for her outstanding performance"
is one way to choose, pick out, select, take
Sample sentences: They single out him to write the letter

2.  single out(v = verb.social) discriminate, separate - treat differently on the basis of sex or race;
is one way to differentiate, distinguish, secern, secernate, separate, severalise, severalize, tell, tell apart
Sample sentences: Somebody ----s something; Somebody ----s somebody

VB  offers one's choice, set before, hold out the alternative, present the alternative, offer the alternative, put to the vote, use option, use discretion, exercise option, exercise discretion, one's option, adopt, take up, embrace, espouse, choose, elect, opt for, take one's choice, make one's choice, make choice of, fix upon, vote, poll, hold up one's hand, divide, settle, decide, list, make up one's mind, select, pick and choose, pick out, single out, cull, glean, winnow, sift the chaff from the wheat, separate the chaff from the wheat, winnow the chaff from the wheat, pick up, pitch upon, pick one's way, indulge one's fancy, set apart, mark out for, mark, prefer, have rather, have as lief, fancy, be persuaded, take a decided step, take a decisive step, commit oneself to a course, pass the Rubicon, cross the Rubicon, cast in one's lot with, take for better or for worse.

act out, acting out, air out, all get out, all out, ask out, average out, babble out, back out, bail out, bale out, bang out, bat out, bawl out, bawling out, bear out, 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 out, bow out, bracket out, branch out, brave out, brazen out, break out, breathe out, breathing out, bring out, bug out, bulge out, burn out, burst out, bush out, buy out, call out, camp out, cancel out, carry out, carrying out, cash out, cast out, catch out, cavern out, centrifuge out, chalk out, check out, chew out, chewing out, chicken out, chill out, chuck out, churn out, clapped out, clean out, clear out, clock out, close out, comb out, come out, come out of the closet, 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 it out, cut out, cutting out, day in and day out, day in day out, deal out, dealt out, deck out, decked out, die out, dig out, dine out, dish out, dole out, doled out, dope out, drag out, dragged out, draw out, drawn out, dress out, drive out, 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 out, falling out, fan out, far out, farm out, fatten out, feel out, feeling out, ferret out, fig out, 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, flare out, flat out, flatten out, flesh out, fleshed out, flip out, flood out, flow out, flunk out, follow out, force out, forcing out, fork out, foul out, freak out, freeze out, get out, get out of, give out, go all out, go out, gouge out, grind out, gross out, ground out, grub out, hammer out, hand out, hang out, hash out, hear out, help out, hew out, hide out, hire out, hold out, hold out on, hole out, holler out, hollow out, hop out, inside out, invite out, iron out, jump out, jut out, keep out, key out, kick out, kit out, knock out, knocked out, lash out, last in first out, last out, lay out, leaf out, leak out, leap out, leave out, leaving out, let out, let the cat out of the bag, lift out, light out, line single, line-drive single, live out, lock out, log out, 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 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, pay out, peal out, peter out, phase out, pick out, pig out, pip out, 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 out, pull out all the stops, pulling out, punch out, push out, put out, put out feelers, puzzle out, rag out, rain out, ration out, ravel out, reach out, reason out, rent out, report out, ride out, rig out, rigged out, ring out, rip out, roll out, root out, rough out, round out, rout out, rub out, rule out, run out, rush out, sack out, sally out, scarf out, scent out, scoop out, score out, scratch out, screen out, seek out, sell out, send out, separate out, set out, shared out, shell out, shoot out, shout out, shut out, sieve out, single, single bed, single combat, single cream, single crochet, single dwelling, single entry, single file, single handed, single minded, single prop, single quote, single shell, single stitch, single supplement, single tax, sit out, sleep out, slip out of, smell out, smoke out, smooth out, 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 out, start out, step out, stick it out, stick out, sticking out, stink out, straight out, straighten out, stretch out, stretched out, strike out, string out, strung out, stub out, suck out, suss out, swear out, sweat it out, sweep out, swing out, take out, talk out of, tap out, tear out, thin out, think out, thrash out, throw out, throw out of kilter, thrust out, thump out, time out, time out of mind, tire out, tog out, top out, toss out, tough it out, trick out, tricked out, trip out, trot out, trump out, try out, tucker out, tuckered out, turf out, 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, way out, wear out, weed out, well out, well thought out, white out, 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