A long narrow opening.

synonyms: cleft, crevice, fissure, scissure.

Roget 44: disjunction, disconnection, disunity, disunion, disassociation, disengagement; discontinuity etc. 70; abjunction^†; cataclasm^†; inconnection^†; abstraction, abstractedness; isolation; insularity, insulation; oasis; island; separateness etc. adj.; severalty; disjecta membra [Lat.]; dispersion etc. 73; apportionment etc. 786.    separation; parting etc. v.; circumcision; detachment, segregation; divorce, sejunction^†, seposition^†, diduction^†, diremption^†, discerption^†; elision; caesura, break, fracture, division, subdivision, rupture; compartition^†; dismemberment, dislocation; luxation^†; severance, disseverance; scission; rescission, abscission; laceration, dilaceration^†; disruption, abruption^†; avulsion^†, divulsion^†; section, resection, cleavage; fission; partibility^†, separability.    fissure, breach, rent, split, rift, crack, slit, incision.    dissection anatomy; decomposition etc. 49; cutting instrument etc. (sharpness) 253; buzzsaw, circular saw, rip saw.    separatist.    ... show more

Roget 113: instantaneity, instantaneousness, immediacy; suddenness, abruptness.    moment, instant, second, minute; twinkling, trice, flash, breath, crack, jiffy, coup, burst, flash of lightning, stroke of time.    epoch, time; time of day, time of night; hour, minute; very minute &c., very time, very hour; present time, right time, true time, exact correct time.    ... show more

Roget 198: interval, interspace^†; separation etc. 44; break, gap, opening; hole etc. 260; chasm, hiatus, caesura; interruption, interregnum; interstice, lacuna, cleft, mesh, crevice, chink, rime, creek, cranny, crack, chap, slit, fissure, scissure^†, rift, flaw, breach, rent, gash, cut, leak, dike, ha-ha.    gorge, defile, ravine, canon, crevasse, abyss, abysm; gulf; inlet, frith^†, strait, gully; pass; furrow etc. 259; abra^†; barranca^†, barranco^†; clove [U.S.], gulch [U.S.], notch [U.S.]; yawning gulf; hiatus maxime [Lat.], hiatus valde deflendus [Lat.]; parenthesis etc. (interjacence) 228^†; void etc. (absence) 187; incompleteness etc. 53.    [interval of time] period etc. 108; interim (time) 106.    ... show more

Roget 259: furrow, groove, rut, sulcus [Anat.], scratch, streak, striae, crack, score, incision, slit; chamfer, fluting; corduroy road, cradle hole.    channel, gutter, trench, ditch, dike, dyke; moat, fosse^†, trough, kennel; ravine etc. (interval) 198; tajo [U.S.], thank-ye-ma'am [U.S.].    ... show more

Dutch: barst, berst, breuk, fissuur, kier, reet, scheur, spleet
Polish: rozszczep, rozszczepienie, szczelina, szpara

A narrow opening:
— He opened the window a crack.

synonym: gap.

Roget 70: discontinuity; disjunction etc. 44; anacoluthon^†; interruption, break, fracture, flaw, fault, crack, cut; gap etc. (interval) 198; solution of continuity, caesura; broken thread; parenthesis, episode, rhapsody, patchwork; intermission; alternation etc. (periodicity) 138; dropping fire.    ... show more

A long narrow depression in a surface.

synonyms: chap, cranny, crevice, fissure.

A sudden sharp noise:
— The crack of a whip.
— He heard the cracking of the ice.

synonyms: cracking, snap.

A chance to do something.

synonym: shot.

Witty remark.

synonyms: quip, sally, wisecrack.

A blemish resulting from a break without complete separation of the parts.

A purified and potent form of cocaine that is smoked rather than snorted; highly addictive.

synonyms: crack cocaine, tornado.

Dutch: crack
Polish: crack

A usually brief attempt:
— He took a crack at it.

synonyms: fling, go, offer, pass, whirl.

Dutch: bod

The act of cracking something.

synonyms: cracking, fracture.

Become fractured; break or crack on the surface only:
— The glass cracked when it was heated.

synonyms: break, check.

Roget 480a: discover, find, determine, evolve, learn etc. 539; fix upon; pick up; find out, trace out, make out, hunt out, fish out, worm out, ferret out, root out; fathom; bring out, draw out; educe, elicit, bring to light; dig out, grub up, fish up; unearth, disinter.    solve, resolve, elucidate; unriddle, unravel, unlock, crack, crack open; pick up, open the lock; find a clue, find clew a to, find the key to the riddle; interpret etc. 522; disclose etc. 529.    trace, get at; hit it, have it; lay one's finger, lay one's hands upon; spot; get at the truth, arrive at the truth etc. 494; put the saddle on the right horse, hit the right nail on the head.    be near the truth, be warm, get warmer, burn; smoke, scent, sniff, catch a whiff of, smell a rat.    open the eyes to; see through, see daylight, see in its true colors, see the cloven foot; detect; catch, catch tripping.    pitch upon, fall upon, light upon, hit upon, stumble upon, pop upon; come across, come onto; meet with, meet up with, fall in with.    recognize, realize; verify, make certain of, identify.    ... show more

Roget 44: be disjoined &c.; come off, fall off, come to pieces, fall to pieces; peel off; get loose.    disjoin, disconnect, disengage, disunite, dissociate, dispair^†; divorce, part, dispart^†, detach, separate, cut off, rescind, segregate; set apart, keep apart; insulate, isolate; throw out of gear; cut adrift; loose; unloose, undo, unbind, unchain, unlock etc. (fix) 43, unpack, unravel; disentangle; set free etc. (liberate) 750.    sunder, divide, subdivide, sever, dissever, abscind^†; circumcise; cut; incide^†, incise; saw, snip, nib, nip, cleave, rive, rend, slit, split, splinter, chip, crack, snap, break, tear, burst; rend &c., rend asunder, rend in twain; wrench, rupture, shatter, shiver, cranch^†, crunch, craunch^†, chop; cut up, rip up; hack, hew, slash; whittle; haggle, hackle, discind^†, lacerate, scamble^†, mangle, gash, hash, slice.    cut up, carve, dissect, anatomize; dislimb^†; take to pieces, pull to pieces, pick to pieces, tear to pieces; tear to tatters, tear piecemeal, tear limb from limb; divellicate^†; skin etc. 226; disintegrate, dismember, disbranch^†, disband; disperse etc. 73; dislocate, disjoint; break up; mince; comminute etc. (pulverize) 330; apportion etc. 786.    part, part company; separate, leave.    ... show more

Roget 328: be brittle etc. adj.; live in a glass house.    break, crack, snap, split, shiver, splinter, crumble, break short, burst, fly, give way; fall to pieces; crumble to, crumble into dust.    ... show more

Roget 884: boast, make a boast of, brag, vaunt, Puff, show off, flourish, crake^†, crack, trumpet, strut, swagger, vapor; blague^†, blow, four-flush [Slang], bluff.    exult, crow, crow over, neigh, chuckle, triumph; throw up one's cap; talk big, se faire valoir [Fr.], faire claquer son fouet [Fr.], take merit to oneself, make a merit of, sing Io triumphe^†, holloa before one is out of the wood^†.    ... show more

Dutch: kraken, barsten, bersten, kloven

Make a very sharp explosive sound.

Make a sharp sound.

synonym: snap.

Roget 406: rap, snap, tap, knock, ping; click; clash; crack, crackle; crash; pop; slam, bang, blast, boom, clap, clang, clack, whack, wham; brustle^†; burst on the ear; crepitate, rump.    blow up, blow; detonate.    ... show more

Dutch: knappen

Hit forcefully; deal a hard blow, making a cracking noise.

Pass through (a barrier):
— Registrations cracked through the 30,000 mark in the county.

synonym: break through.

Break partially but keep its integrity.

Dutch: knakken, knikken

Break suddenly and abruptly, as under tension.

synonym: snap.

Gain unauthorized access computers with malicious intentions.

Suffer a nervous breakdown.

synonyms: break up, collapse, crack up, crock up.

Dutch: doldraaien, doordraaien, inklappen, instorten, inzakken

Tell spontaneously.

Cause to become cracked.

Reduce (petroleum) to a simpler compound by cracking.

Break into simpler molecules by means of heat.

Of the highest quality:
— A crack shot.

synonyms: A-one, ace, first-rate, super, tiptop, top-notch, topnotch, tops.

Roget 698: skillful, dexterous, adroit, expert, apt, handy, quick, deft, ready, gain; slick, smart etc. (active) 682; proficient, good at, up to, at home in, master of, a good hand at, au fait, thoroughbred, masterly, crack, accomplished; conversant etc. (knowing) 490.    experienced, practiced, skilled, hackneyed; up in, well up in; in practice, in proper cue; competent, efficient, qualified, capable, fitted, fit for, up to the mark, trained, initiated, prepared, primed, finished.    clever, cute, able, ingenious, felicitous, gifted, talented, endowed; inventive etc. 515; shrewd, sharp, on the ball etc. (intelligent) 498; cunning etc. 702; alive to, up to snuff, not to be caught with chaff; discreet.    neat-handed, fine-fingered, nimble-fingered, ambidextrous, sure-footed; cut out for, fitted for.    technical, artistic, scientific, daedalian^†, shipshape; workman-like, business-like, statesman-like.    ... show more

Roget 648: harmless, hurtless^†; unobnoxious^†, innocuous, innocent, inoffensive.    beneficial, valuable, of value; serviceable etc. (useful) 644; advantageous, edifying, profitable; salutary etc. (healthful) 656.    favorable; propitious etc. (hope-giving) 858; fair.    good, good as gold; excellent; better; superior etc. 33; above par; nice, fine; genuine etc. (true) 494.    best, choice, select, picked, elect, recherche, rare, priceless; unparagoned^†, unparalleled etc. (supreme) 33; superlatively etc. 33; good; bully [Slang], crackajack [Slang], giltedged; superfine, superexcellent^†; of the first water; first-rate, first-class; high-wrought, exquisite, very best, crack, prime, tiptop, capital, cardinal; standard etc. (perfect) 650; inimitable.    admirable, estimable; praiseworthy etc. (approve) 931; pleasing etc. 829; couleur de rose [Fr.], precious, of great price; costly etc. (dear) 814; worth its weight in gold, worth a Jew's eye; priceless, invaluable, inestimable, precious as the apple of the eye.    tolerable etc. (not very good) 651; up to the mark, unexceptionable, unobjectionable; satisfactory, tidy.    in good condition, in fair condition; fresh; sound etc. (perfect) 650.    ... show more

Polish: topowy