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adept accomplished proficient expert masterly skilful able consummate adroit dextrous dexterous skilled capable competent deft gifted skillful talented virtuoso handy artful brilliant excellent formidable impressive marvelous marvellous masterful outstanding practiced practised slick splendid versed wizard ace crack crackerjack fine great nifty experienced fab good peerless smashing brill compleat complete deadly educated habile hot hotshot magic master mean savvy tasty veteran whiz A1 clean sharp smooth there tip-top top-notch first-class a dab hand at first-rate nimble-fingered top-drawer very good top-hole up to speed on the ball on the beam very able sharp as a tack no slouch no dummy clever polished trained efficient qualified professed professional seasoned apt knowledgeable ingenious genius smart workmanlike well versed stellar delicate wicked bravura quick nimble superb exceptional effective intelligent elite magnificent agile superlative pro astute suitable fit superior neat 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quick-witted fast perspicacious champion balanced supersmart ultrasmart hyperintelligent wised up reliable fluent thorough a hand at highly skilled exceptionally skilled immensely skilled highly qualified extraordinarily skilled very skilled highly trained tuned in businesslike tricky old hand sensational painstaking unrivaled crisp unrivalled eligible flawless exercised designing time-served careful productive foxy devious impeccable best star discreet mighty intellectual sneaky worldly-wise weathered sophisticated super conversant active long-time disciplined worldly sensitive strategic cagy beguiling dodgy scholarly underhand admirable inventive profound erudite penetrating cerebral having know-how rational exceptionally good intriguing knowing the score eggheaded whip been around not born yesterday very intelligent Einstein whiz kid know the ropes class act quick on the trigger shining at quick on the uptake graceful very well straight decisive methodic methodical impeccably credentialed systematic right on errorless dead-on well sporting on-target trustworthy spot-on sure-fire stringent prodigious preeminent transcendent quintessential sensible prolific decent strict express categorical exemplary ultimate handpicked capital deluxe sik exo redoubtable hardy kosher well credentialed inch-perfect first class virtuosic licensed chartered treacherous invincible indomitable drilled phenom top topnotch distinguished hep hip voluble organized appropriate specialized employable long-term certificated fleet rad phat schmick dynamic ultraefficient pitch-perfect happy advanced switched-on well-informed acquainted specialised artistic rangé dominant habituated hot tamale feasible having the know-how sussed organised right fitting puissant amazing teachable having good hands adept physically easy authorized astounding supremely skilled toughened matured receptive well executed forward killer useable working realizable realisable hyperefficient usable practicable quick to learn leet worthy responsible ideal desirable preferable quick-thinking clever with one's hands good with one's hands licenced proved authorised accepted of long standing past your prime patriarchal full of years sufficient well up perfectly-executed well-executed cut out for having a knack for highly endowed observant tactful noteworthy steady old-time inured up on nobody's fool sublime glorious nimble-witted quick off the mark rounded sport accustomed heavenly well up in worldly wise been there in the know versed in know backwards and forwards know one's onions mega banging cracking crucial vigorous mercurial curt wired divine bosting well suited well qualified have the goods ahead of one's peers out of the ordinary have smarts old beyond one's years got it advanced for one's age pretty all there smart as a whip wide awake quick on the draw of the first water supercalifragilisticexpialidocious slippery complicitous chary craft all around adapted broken in know one's business know ins and outs know the score know one's stuff know the answers polite prudent the right stuff knowing one's stuff knows one's stuff from way back wise to ways judicious having the goods knowing the ropes green thumb old-timer of the old school having the right stuff has what it takes like a one-man band able to perform complicit like a pistol equal to the task up there understanding considerate thoughtful conciliatory diplomatic arch bland contriving cautious gracious suave courteous opportunistic treating with kid gloves Machiavellian dishonest cheating disingenuous untrustworthy deceptive double-dealing fly slim shonky shifty dirty vulpine unscrupulous carny grand topping fantabulous prime lovely sterling peachy swell radical dandy groovy corking unsurpassed bully jim-dandy dope boss quality high-class out-of-sight beaut spiffing bonzer boffo beautiful amazeballs primo on fleek A-OK number one blue-ribbon immense righteous classic prizewinning blue-chip first-string five-star 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consequential hundred-proof one-in-a-million utopian crown vintage dominating Grade A record-breaking big-time undefeated unbeaten sans pareil miraculous colossal copacetic A-number-1 mostest better than usual of the best quality better than average cat's pajamas hunky dory intense vital rousing crash-hot gee-whizz forcible eye-popping jaw-dropping honest up to the mark reputed palmary nasty believeable organic well-thought-of of genius cardinal impassioned batting a thousand salt of the earth not too shabby biggest senior larger higher greater bigger major elder well-done arch- most excellent most important

knows very well knows what makes someone tick knows what one is about knows what's what knows what to do knows which end is up knows the score knows the routine knows the procedure knows the ins and outs knows the drill knows someone in the biblical sense