| acknowledge | (verb) accept as legally binding and valid | - |
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| (verb) accept (someone) to be what is claimed or accept his power and authority | Synonyms: know, recognise, recognize |
| (verb) declare to be true or admit the existence or reality or truth of | Synonyms: admit |
| (verb) express obligation, thanks, or gratitude for | Synonyms: recognise, recognize |
| (verb) report the receipt of | Synonyms: receipt |
| (verb) express recognition of the presence or existence of, or acquaintance with | Synonyms: notice |
| attack | (verb) begin to injure | - |
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| (verb) set to work upon; turn one's energies vigorously to a task | - |
| (verb) attack in speech or writing | Synonyms: assail, assault, lash out, round, snipe |
| (verb) launch an attack or assault on; begin hostilities or start warfare with | Synonyms: assail |
| (verb) take the initiative and go on the offensive | Synonyms: aggress |
| (verb) attack someone physically or emotionally | Synonyms: assail, assault, set on |
| back | (verb) establish as valid or genuine | Synonyms: back up |
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| (verb) strengthen by providing with a back or backing | - |
| (verb) shift to a counterclockwise direction | - |
| (verb) place a bet on | Synonyms: bet on, gage, game, punt, stake |
| (verb) travel backward | - |
| (verb) cause to travel backward | - |
| (verb) support financial backing for | - |
| (verb) be behind; approve of | Synonyms: endorse, indorse, plump for, plunk for, support |
| (verb) give support or one's approval to | Synonyms: endorse, indorse, second |
| (verb) be in back of | - |
| backbite | (verb) say mean things | Synonyms: bitch |
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| backcross | (verb) mate a hybrid of the first generation with one of its parents | - |
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| backdate | (verb) make effective from an earlier date | - |
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| backfire | (verb) set a controlled fire to halt an advancing forest to prairie fire | - |
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| (verb) emit a loud noise as a result of undergoing a backfire | - |
| (verb) come back to the originator of an action with an undesired effect | Synonyms: backlash, recoil |
| background | (verb) understate the importance or quality of | Synonyms: downplay, play down |
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| backhand | (verb) hit a tennis ball backhand | - |
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| backlash | (verb) come back to the originator of an action with an undesired effect | Synonyms: backfire, recoil |
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| backlog | (verb) accumulate and create a backlog | - |
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| backpack | (verb) hike with a backpack | Synonyms: pack |
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| backpedal | (verb) modify one's opinion, make it less strong | - |
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| (verb) pedal backwards on a bicycle | - |
| (verb) step backwards, in boxing | - |
| backscatter | (verb) scatter (radiation) by the atoms of the medium through which it passes | - |
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| backslap | (verb) display excessive cordiality (towards) | - |
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| backslide | (verb) drop to a lower level, as in one's morals or standards | Synonyms: lapse |
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| backspace | (verb) hit the backspace key on a computer or typewriter keyboard | - |
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| backstitch | (verb) do backstitches | - |
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| backstop | (verb) act as a backstop | - |
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| backstroke | (verb) swim on one's back | - |
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| backtrack | (verb) retrace one's course | Synonyms: double back, turn back |
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| barrack | (verb) laugh at with contempt and derision | Synonyms: flout, gibe, jeer, scoff |
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| (verb) spur on or encourage especially by cheers and shouts | Synonyms: cheer, exhort, inspire, pep up, root on, urge, urge on |
| (verb) lodge in barracks | - |
| black | (verb) make or become black | Synonyms: blacken, melanise, melanize |
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| blackball | (verb) expel from a community or group | Synonyms: ban, banish, cast out, ostracise, ostracize, shun |
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| (verb) vote against; refuse to endorse; refuse to assent | Synonyms: negative, veto |
| blackberry | (verb) pick or gather blackberries | - |
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| blacken | (verb) make or become black | Synonyms: black, melanise, melanize |
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| (verb) burn slightly and superficially so as to affect color | Synonyms: char, scorch, sear |
| blackguard | (verb) use foul or abusive language towards | Synonyms: abuse, clapperclaw, shout |
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| (verb) subject to laughter or ridicule | Synonyms: guy, jest at, laugh at, make fun, poke fun, rib, ridicule, roast |
| blackjack | (verb) exert pressure on someone through threats | Synonyms: blackmail, pressure |
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| blacklead | (verb) cover with graphite | - |
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| blackleg | (verb) take the place of work of someone on strike | Synonyms: fink, rat, scab |
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| blacklist | (verb) put on a blacklist so as to banish or cause to be boycotted | - |
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| blackmail | (verb) obtain through threats | - |
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| (verb) exert pressure on someone through threats | Synonyms: blackjack, pressure |
| blacktop | (verb) coat with blacktop | - |
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| blackwash | (verb) color with blackwash | - |
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| (verb) bring (information) out of concealment | - |
| bracket | (verb) classify or group | - |
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| (verb) place into brackets | Synonyms: bracket out |
| (verb) support with brackets | - |
| bushwhack | (verb) wait in hiding to attack | Synonyms: ambuscade, ambush, lie in wait, lurk, scupper, waylay |
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| (verb) cut one's way through the woods or bush | - |
| (verb) live in the bush as a fugitive or as a guerilla | - |
| cackel | (verb) make a cackling sound | - |
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| cackle | (verb) emit a loud, unpleasant kind of laughing | - |
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| (verb) squawk shrilly and loudly, characteristic of hens | - |
| (verb) talk or utter in a cackling manner | - |
| (verb) make a noise characteristic of a goose | Synonyms: gaggle |
| carjack | (verb) take someone's car from him by force, usually with the intention of stealing it | - |
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| clack | (verb) speak (about unimportant matters) rapidly and incessantly | Synonyms: blab, blabber, chatter, gabble, gibber, maunder, palaver, piffle, prate, prattle, tattle, tittle-tattle, twaddle |
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| (verb) make a clucking sounds, characteristic of hens | Synonyms: click, cluck |
| (verb) make a rattling sound | Synonyms: brattle, clatter |
| counterattack | (verb) make a counterattack | Synonyms: counterstrike |
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| crack | (verb) break suddenly and abruptly, as under tension | Synonyms: snap |
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| (verb) become fractured; break or crack on the surface only | Synonyms: break, check |
| (verb) break partially but keep its integrity | - |
| (verb) cause to become cracked | - |
| (verb) reduce (petroleum) to a simpler compound by cracking | - |
| (verb) break into simpler molecules by means of heat | - |
| (verb) pass through (a barrier) | Synonyms: break through |
| (verb) tell spontaneously | - |
| (verb) hit forcefully; deal a hard blow, making a cracking noise | - |
| (verb) suffer a nervous breakdown | Synonyms: break up, collapse, crack up, crock up |
| (verb) make a sharp sound | Synonyms: snap |
| (verb) make a very sharp explosive sound | - |
| (verb) gain unauthorized access computers with malicious intentions | - |
| crackle | (verb) to become, or to cause to become, covered with a network of small cracks | - |
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| (verb) make a crushing noise | Synonyms: crunch, scranch, scraunch |
| (verb) make a crackling sound | Synonyms: crepitate |
| follback | (verb) to return someone's following of you on a social media platform | - |
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| fullback | (verb) play the fullback | - |
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| hack | (verb) cough spasmodically | Synonyms: whoop |
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| (verb) significantly cut up a manuscript | Synonyms: cut up |
| (verb) fix a computer program piecemeal until it works | Synonyms: hack on |
| (verb) kick on the shins | - |
| (verb) kick on the arms | - |
| (verb) cut away | - |
| (verb) cut with a hacking tool | Synonyms: chop |
| (verb) be able to manage or manage successfully | Synonyms: cut |
| hackle | (verb) comb with a heckle | Synonyms: hatchel, heckle |
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| highjack | (verb) take arbitrarily or by force | Synonyms: commandeer, hijack, pirate |
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| hijack | (verb) take arbitrarily or by force | Synonyms: commandeer, highjack, pirate |
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| (verb) seize control of | - |
| jack | (verb) hunt with a jacklight | Synonyms: jacklight |
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| (verb) lift with a special device | Synonyms: jack up |
| jacket | (verb) put a jacket on | - |
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| (verb) provide with a thermally non-conducting cover | - |
| jackknife | (verb) dive into the water bending the body at the waist at a right angle, like a jackknife | - |
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| jacklight | (verb) hunt with a jacklight | Synonyms: jack |
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| jackrabbit | (verb) go forward or start with a fast, sudden movement | - |
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| jampack | (verb) crowd or pack to capacity | Synonyms: chock up, cram, jam, ram, wad |
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| lack | (verb) be without | Synonyms: miss |
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| (verb) To be insufficiently prepared | - |
| lifehack | (verb) make one's day-to-day activities more efficient | - |
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| pack | (verb) treat the body or any part of it by wrapping it, as with blankets or sheets, and applying compresses to it, or stuffing it to provide cover, containment, or therapy, or to absorb blood | - |
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| (verb) arrange in a container | - |
| (verb) load with a pack | Synonyms: load down |
| (verb) compress into a wad | Synonyms: bundle, compact, wad |
| (verb) seal with packing | - |
| (verb) press down tightly | Synonyms: tamp, tamp down |
| (verb) carry, as on one's back | - |
| (verb) have the property of being packable or of compacting easily | Synonyms: compact |
| (verb) press tightly together or cram | Synonyms: jam, mob, pile, throng |
| (verb) hike with a backpack | Synonyms: backpack |
| (verb) fill to capacity | - |
| (verb) set up a committee or legislative body with one's own supporters so as to influence the outcome | - |
| (verb) have with oneself; have on one's person | Synonyms: carry, take |
| package | (verb) put into a box | Synonyms: box |
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| piggyback | (verb) bring into alignment with | - |
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| (verb) support on the back and shoulders | - |
| (verb) haul by railroad car | - |
| (verb) haul truck trailers loaded with commodities on railroad cars | - |
| (verb) ride on someone's shoulders or back | - |
| quack | (verb) act as a medical quack or a charlatan | - |
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| (verb) utter quacking noises | - |
| quarterback | (verb) play the quarterback | - |
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| rack | (verb) torture on the rack | - |
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| (verb) seize together, as of parallel ropes of a tackle in order to prevent running through the block | - |
| (verb) place in a rack | Synonyms: rack up |
| (verb) work on a rack | - |
| (verb) stretch to the limits | - |
| (verb) torment emotionally or mentally | Synonyms: excruciate, torment, torture |
| (verb) go at a rack | Synonyms: single-foot |
| (verb) draw off from the lees | - |
| (verb) run before a gale | Synonyms: scud |
| (verb) fly in high wind | - |
| (verb) obtain by coercion or intimidation | Synonyms: extort, gouge, squeeze, wring |
| (verb) put on a rack and pinion | - |
| racket | (verb) hit (a ball) with a racket | - |
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| (verb) make loud and annoying noises | - |
| (verb) celebrate noisily, often indulging in drinking; engage in uproarious festivities | Synonyms: jollify, make happy, make merry, make whoopee, revel, wassail, whoop it up |
| racketeer | (verb) carry on illegal business activities involving crime | - |
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| ransack | (verb) search thoroughly | Synonyms: comb |
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| (verb) steal goods; take as spoils | Synonyms: despoil, foray, loot, pillage, plunder, reave, rifle, strip |
| sack | (verb) put in a sack | - |
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| (verb) plunder (a town) after capture | Synonyms: plunder |
| (verb) make as a net profit | Synonyms: clear, net, sack up |
| (verb) terminate the employment of; discharge from an office or position | Synonyms: can, dismiss, displace, fire, force out, give notice, give the axe, give the sack, send away, terminate |
| shack | (verb) move, proceed, or walk draggingly or slowly | Synonyms: trail |
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| (verb) make one's home in a particular place or community | Synonyms: domicile, domiciliate, reside |
| shackle | (verb) restrain with fetters | Synonyms: fetter |
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| (verb) bind the arms of | Synonyms: pinion |
| shellack | (verb) cover with shellac | Synonyms: shellac |
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| sidetrack | (verb) wander from a direct or straight course | Synonyms: depart, digress, straggle |
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| skyjack | (verb) subject an aircraft to air piracy | - |
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| slack | (verb) release tension on | - |
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| (verb) make less active or fast | Synonyms: relax, slack up, slacken |
| (verb) make less active or intense | Synonyms: abate, slake |
| (verb) become slow or slower | Synonyms: slacken, slow, slow down, slow up |
| (verb) cause to heat and crumble by treatment with water | Synonyms: slake |
| (verb) become less in amount or intensity | Synonyms: abate, die away, let up, slack off |
| (verb) be inattentive to, or neglect | - |
| (verb) avoid responsibilities and work, be idle | - |
| slacken | (verb) become looser or slack | - |
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| (verb) make slack as by lessening tension or firmness | Synonyms: remit |
| (verb) become slow or slower | Synonyms: slack, slow, slow down, slow up |
| (verb) make less active or fast | Synonyms: relax, slack, slack up |
| smack | (verb) press (the lips) together and open (the lips) noisily, as in eating | - |
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| (verb) kiss lightly | Synonyms: peck |
| (verb) deliver a hard blow to | Synonyms: thwack |
| (verb) have a distinctive or characteristic taste | Synonyms: taste |
| (verb) have an element suggestive (of something) | Synonyms: reek, smell |
| snack | (verb) eat a snack; eat lightly | Synonyms: nosh |
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| stack | (verb) arrange in stacks | Synonyms: heap, pile |
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| (verb) load or cover with stacks | - |
| (verb) arrange the order of so as to increase one's winning chances | - |
| tack | (verb) reverse (a direction, attitude, or course of action) | Synonyms: alternate, flip-flop, flip, interchange, switch |
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| (verb) fasten with tacks | - |
| (verb) sew together loosely, with large stitches | Synonyms: baste |
| (verb) fix to; attach | Synonyms: append, hang on, tack on, tag on |
| (verb) create by putting components or members together | Synonyms: assemble, piece, put together, set up, tack together |
| (verb) turn into the wind | Synonyms: wear round |
| tackle | (verb) seize and throw down an opponent player, who usually carries the ball | - |
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| (verb) put a harness | Synonyms: harness |
| (verb) accept as a challenge | Synonyms: take on, undertake |
| thumbtack | (verb) fasten with thumbtacks | - |
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| thwack | (verb) deliver a hard blow to | Synonyms: smack |
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| ticktack | (verb) make a sound like a clock or a timer | Synonyms: beat, tick, ticktock |
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| track | (verb) make tracks upon | - |
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| (verb) go after with the intent to catch | Synonyms: chase, chase after, dog, give chase, go after, tag, tail, trail |
| (verb) travel across or pass over | Synonyms: cover, cross, cut across, cut through, get across, get over, pass over, traverse |
| (verb) carry on the feet and deposit | - |
| (verb) observe or plot the moving path of something | - |
| unpack | (verb) remove from its packing | Synonyms: take out |
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| whack | (verb) strike hard | Synonyms: wallop, wham, whop |
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| wisecrack | (verb) make a comment, usually ironic | - |
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| wrack | (verb) smash or break forcefully | Synonyms: bust up, wreck |
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| yack | (verb) talk incessantly and tiresomely | Synonyms: jaw, rattle on, yack away, yap away |
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