| berk | (noun) a stupid person who is easy to take advantage of | - |
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| berserk | (adjective) wildly frenzied and out of control | Synonyms: amok, amuck |
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| (noun) one of the ancient Norse warriors legendary for working themselves into a frenzy before a battle and fighting with reckless savagery and insane fury | Synonyms: berserker |
| clerk | (noun) an employee who performs clerical work (e.g., keeps records or accounts) | - |
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| (noun) a salesperson in a store | Synonyms: salesclerk, shop assistant, shop clerk |
| (verb) work as a clerk, as in the legal business | - |
| hauberk | (noun) a long (usually sleeveless) tunic of chain mail formerly worn as defensive armor | Synonyms: byrnie |
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| jerk | (noun) an abrupt spasmodic movement | Synonyms: jerking, jolt, saccade |
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| (noun) a sudden abrupt pull | Synonyms: tug |
| (noun) raising a weight from shoulder height to above the head by straightening the arms | - |
| (noun) meat (especially beef) cut in strips and dried in the sun | Synonyms: jerked meat, jerky |
| (noun) a dull stupid fatuous person | Synonyms: dork |
| (noun) (mechanics) the rate of change of acceleration | - |
| (verb) make an uncontrolled, short, jerky motion | Synonyms: twitch |
| (verb) throw or toss with a quick motion | Synonyms: flick |
| (verb) pull, or move with a sudden movement | Synonyms: yank |
| (verb) move with abrupt, seemingly uncontrolled motions | Synonyms: twitch |
| (verb) jump vertically, with legs stiff and back arched | Synonyms: buck, hitch |
| perk | (noun) an incidental benefit awarded for certain types of employment (especially if it is regarded as a right) | Synonyms: fringe benefit, perquisite |
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| (verb) gain or regain energy | Synonyms: gain vigor, percolate, perk up, pick up |
| salesclerk | (noun) a salesperson in a store | Synonyms: clerk, shop assistant, shop clerk |
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| twerk | (verb) to dance with thrusting hip movements and a low squatting stance | - |
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