| 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 | - |
| 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 | - |
| 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 | - |
| sidetrack | (verb) wander from a direct or straight course | Synonyms: depart, digress, straggle |
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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 | - |
| 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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