3 letters:
air, box, cut, dip, gin, gun, hit, jab, job, lax, pda, saw

4 letters:
balk, bore, boss, cade, cell, clap, cuff, drag, file, fist, grab, hook, left, lick, move, mown, pair, palm, poke, rail, rule, shot, sign, slap, slip, snap, span, spud, suer, sure, wave

5 letters:
auger, bevel, bluff, carry, check, craft, crank, drill, flick, float, flush, glove, hooks, layup, lefty, mouse, mudra, plane, poker, posit, pound, quern, recto, right, shake, smack, smite, snips, spade, spank, stick, stock, stops, thump, torch, touch, uncut, varus, verso, volar, whomp, wring, yo-yo

6 letters:
boodle, casino, cowboy, cowman, cuffed, dabble, daedal, deport, dibber, dibble, euchre, extend, facile, finger, gentle, gimlet, gloves, hammer, knucks, lavabo, lavish, lay-up, maimed, nearby, opener, pallet, palmar, pestle, pincer, pistol, pliers, plyers, poking, puppet, script, shovel, square, strike, stroke, submit, tacker, thenar, thrust, trowel, unhand, unmown, viable, waving, weeder, wimble, wrench

7 letters:
abandon, assured, by hand, cassino, chicago, chicane, cowhand, cowherd, cowpoke, declare, deliver, dextral, drawing, fistful, forepaw, fortune, gantlet, grapple, grenade, hacksaw, handbow, handcar, handful, handgun, handsaw, holster, however, in hand, jabbing, longbow, movable, nankeen, overarm, overbid, pick up, plunger, present, pronate, puncher, scatter, scraper, signing, slapped, slapper, spanker, spanner, spatula, squeeze, stamper, starter, support, timbrel, toolbox, tweezer, unblock, wafture, wrestle

8 letters:
annualry, backhand, dice box, dice cup, exchange, farmhand, feasible, forehand, freehand, gauntlet, handbell, handless, handline, handloom, handmade, handrest, handsewn, handwash, handwork, hand dye, inflater, inflator, knuckles, longhand, manicure, manually, michigan, off-hand, overcall, overhand, rassling, ravehook, rawboned, side arm, smacking, snapshot, southpaw, spreader, straight, supinate, sureness, ticktack, tinsnips, underarm, underbid, washbowl, withhold, workable

9 letters:
autograph, blistered, bluff out, broadcast, captivity, cattleman, cellphone, chiralgia, chirology, dexterous, doubleton, emergency, excitedly, extradite, fieldhand, firsthand, free hand, gin rummy, give away, grappling, hand-held, handbasin, handclasp, handcraft, handiness, handiwork, handshake, handstamp, handwheel, handwrite, hand line, hand pump, hook shot, hour hand, imperious, improvise, inventory, keep back, laying on, left hand, long suit, mahlstick, maladroit, maulstick, metal saw, miter box, mitre box, newmarket, organiser, organizer, palmistry, pertinent, pitchfork, playfully, pulverize, relevance, relevancy, singleton, sinistral, stockpile, threshing, thrusting, tire iron, tire tool, tool case, trapezium, underhand, untouched, washbasin, washstand, wrestling

10 letters:
backhanded, blow dryer, chiromancy, cloverleaf, clutch bag, cowpuncher, dextrality, executable, fingerpost, freehanded, full house, glove doll, grand slam, grease-gun, hair dryer, handedness, handicraft, hand brake, hand drill, hand glass, hand mower, hectograph, hired hand, laterality, metacarpal, metacarpus, overhanded, pertinence, pertinency, poker game, right-hand, right hand, shell game, small slam, staple gun, stump spud, sweep hand, tapotement, thimblerig, thriftshop, tool chest, two-handed, typewriter

11 letters:
basket hilt, cabinetwork, coal shovel, dummy whist, extemporize, farm worker, fingerboard, germaneness, handbreadth, handshaking, handwriting, handwritten, hand blower, hand cheese, hand mirror, hand puppet, hand shovel, holographic, importunate, irrelevance, irrelevancy, knock rummy, left-handed, left-hander, left hander, little hand, little slam, marlinspike, metal glove, out of hand, pipe cutter, practicable, ring finger, royal flush, screwdriver, screw auger, second hand, stocktaking, ulnar nerve, unavailable, underhanded, wood chisel

12 letters:
acromyotonia, ambidextrous, availability, basilic vein, bevel square, block letter, brass knucks, five hundred, hand-crafted, hand-me-down, hand-to-hand, handsbreadth, handstitched, hand grenade, hand in hand, hand luggage, hand to hand, inventorying, marlinespike, marlingspike, miraculously, mobile phone, os trapezium, palmate leaf, portable saw, radial nerve, rambunctious, right-handed, right-hander, right hander, rubber stamp, shovel board, sinistrality, stirrup pump, straight-arm, straightedge, sweep-second, tennis elbow, tool cabinet, trench knife, ulnar artery, well-wishing

13 letters:
accessibility, ambidexterity, applicability, availableness, backhand shot, block capital, clenched fist, conscientious, cubital nerve, forehand shot, hand-operated, hand in glove, hand throttle, hand to mouth, holographical, non-automatic, organ-grinder, parking brake, shooting iron, sign language, vena basilica, walking stick

14 letters:
brass knuckles, cellular phone, extraneousness, hand over fist, knuckle duster, nervus ulnaris, running stitch, shove-ha'penny, soldering iron, spinning wheel, straight flush, trapezium bone

15 letters:
backhand stroke, carpenter's saw, dermatoglyphics, desk dictionary, discombobulated, emergency brake, forehand stroke, hand calculator, inapplicability, left-handedness, metacarpal bone, metacarpal vein, on the one hand, pair of pincers, rough-and-ready, shove-halfpenny, trenching spade, vena metacarpus, wash-hand basin, wash-hand stand

16 letters:
ambidextrousness, digital arteries, entrenching tool, glove anesthesia, pair of tweezers, plumber's helper, right-handedness

17 letters:
arteria digitalis, carpenter's plane, metacarpal artery, on the other hand, pocket calculator, portable computer, second-hand store, sign of the cross, woodworking plane

18 letters:
arteria metacarpea, cellular telephone

19 letters:
intercapitular vein, left-handed pitcher, vena intercapitalis

20 letters:
right-handed pitcher

21 letters:
collegiate dictionary, hand-to-hand struggle, lateral epicondylitis

22 letters:
carpal tunnel syndrome

26 letters:
personal digital assistant