1 syllable:
-head, bed, bled, bread, bred, dread, dred, dredd, ed, fed, fled, fread, fred, freda, ged, guede, head, jed, kaede, lead, led, med, ned, nedd, nsaid, nsted, pled, read, reade, red, redd, redde, said, sched, schwed, shaed, shead, shed, shedd, shred, sled, sledd, sped, spread, stead, swed, szwed, ted, thread, threadx, tread, wed, wedd, wedde, wehde, zed

2 syllables:
abed, addend, adread, ahead, airhead, amedd, anred, anrede, anstead, armstead, ass-head, ausaid, axe head, ax head, backspread, baghead, bald-head, baldhead, bankhead, banstead, barehead, barrhead, beachhead, beak-head, beakhead, beckstead, bedhead, bedspread, bedstead, bee-bread, beebread, behead, bespread, big-head, bighead, billhead, bitthead, black-lead, blackhead, blacklead, black bread, black lead, blockhead, blood-red, bloodshed, bluehead, bobsled, bolthead, bonehead, boobed, boofhead, bow-head, bowhead, boxhead, braehead, brain-dead, braindead, breadhead, break bread, breastfed, brick red, bridebed, bridgehead, bright-red, broadhead, broadspread, brodhead, brown bread, buckhead, bulkhead, bullhead, bumstead, bunk bed, burghead, butt-head, butthead, calfed, camp bed, cathead, cheesehead, cheese spread, childbed, chrome red, clapbread, clip lead, clouddead, club-head, clubhead, club head, cockhead, cockshead, coed, cokehead, colead, comfed, con-ed, confed, cornbread, cornfed, courtbred, cow's head, crackhead, craghead, craighead, creek bed, crispbread, crossbred, crosshead, crowned head, cuphead, dark bread, dark red, date bread, day bed, deadhead, death's head, deathbed, dechead, deckhead, deep-read, deep red, delmed, despread, dispread, doorstead, dopehead, dotehead, drawhead, drop-dead, drop-head, dropdead, drophead, drumhead, dullhead, dumbhead, earthbred, egghead, embed, embread, farmstead, fathead, firstfed, flatbed, flatbread, flathead, flinthead, floodhead, foodshed, foreread, foresaid, forkhead, fortread, french bread, frybread, fry bread, fuckhead, gainsaid, gateshead, gearhead, gilthead, gisaid, glenfed, goathead, godhead, goldthread, goodbread, gorsedd, greenhead, grinstead, grouthead, gwynedd, half-bred, half-dead, half-read, hampstead, hardhead, hard lead, hash head, hellbred, high-bred, high-red, highbred, hogshead, holstead, home-bred, homebred, homefed, homestead, hophead, horse-head, horsebread, horsehead, hot-head, hotbed, hothead, hungred, ill-bred, imbed, inbred, instead, jarhead, jolthead, judge dredd, jughead, juicehead, kerfed, knighthead, knobhead, krauthead, lakehead, lake bed, lamedh, lawhead, lie-abed, light bread, linebred, link-dead, lip-read, lipread, lochhead, longhead, loosehead, lowbred, lunkhead, manhead, manred, masthead, meathead, milstead, minehead, misdread, misled, misread, miswed, moorehead, moorhead, moosehead, mophead, moshed, mudhead, muirhead, must-read, nail-head, nailhead, nedved, netdead, nethead, newstead, node-red, noonstead, numed, nut bread, olmstead, onstead, oread, ore bed, ounsted, outspread, oxhead, packthread, panhead, peghead, pierhead, pig bed, pig lead, pill head, pinhead, pink-red, pithead, playdead, playhead, plowhead, plumstead, pot-head, pothead, premed, printhead, pure-bred, purebred, pushead, pyspread, quick bread, raghead, railhead, rawhead, re-tread, redhead, red lead, replead, retread, ringhead, roadbed, roadstead, rose-red, rosehead, rose bed, roughhead, roundhead, runghead, rust-red, rye bread, saphead, sayed, scarehead, scimed, screwhead, screw thread, seabed, see red, senedd, sheephead, sheepshead, sheetfed, shewbread, shinehead, shock-head, shortbread, shorthead, shovelhead, showbread, sigfred, sight-read, skinhead, skullhead, skunkhead, slaphead, sleigh bed, smackhead, snake-head, snakehead, snaphead, softhead, soothsaid, sorehead, sourbread, sourcefed, sowbread, spearhead, speech-read, speed-read, spithead, spoonfed, spoon bread, spreadhead, springhead, springstead, staghead, stairhead, stakehead, star-read, steelhead, stephead, stone-dead, stourhead, subhead, suedehead, sunbed, sunsted, sweetbread, swelled head, swellhead, tancred, testbed, test bed, thickhead, thickspread, toadhead, toolhead, tough-head, tow-head, towelhead, towhead, trailhead, truck bed, true-bred, truebred, twin-lead, twin bed, umstead, unbred, undead, unfed, unhead, unlead, unread, unsaid, unted, unthread, unwed, upthread, viread, vivaed, volstead, wanstead, warhead, waybread, waynehead, webhead, well-bred, well-read, wellbred, wellhead, westfed, whitbread, white-bread, whitebread, whitehead, white bread, white lead, widespread, wine-red, wingspread, winstead, winsted, woodhead, woodshed, woolhead, wowhead, wronghead

3 syllables:
abovesaid, acid-head, acidhead, acid head, addle-head, addlehead, aforesaid, armed bullhead, armested, armistead, arrow-head, arrowhead, baby's bed, baby bed, barrelhead, batter bread, beastlihead, beetle-head, beetlehead, bellowhead, billethead, biomed, birkenhead, blackish-red, blodeuwedd, blunderhead, bobblehead, bonnethead, boroughhead, bottlehead, bronze-red, brownish-red, brown bullhead, bubblehead, buckethead, bufferhead, bufflehead, built in bed, bullethead, cadenhead, calibred, campaned, chaos;head, cherry-red, cherry red, chinese-red, chowderhead, christiansted, chris bumstead, chuckle-head, chucklehead, cittern-head, city-bred, cityfed, congo red, copperhead, coral-red, country-bred, cubbridge-head, cuckoo bread, cynghanedd, dittohead, divan bed, double bed, dragon's head, dragonhead, drearihead, drowsihead, drunkenhead, dumbfoundead, dunderhead, duramed, englbred, enisled, feather-head, featherbed, featherhead, feather bed, fiddlehead, figurehead, filter bed, flowerbed, flower head, fountainhead, garlic bread, get ahead, giddy-head, gingerbread, girdlestead, gluten bread, glycomed, go-ahead, godlyhead, golden thread, go ahead, go to bed, graham bread, hammerhead, harddihead, head-to-head, head lice, hilton-head, hilton head, hollingshead, hollinshead, hollyhead, holyhead, hornyhead, human head, humblehead, infra-red, infrared, interbed, interbred, in the head, in the lead, jerkinhead, jollyhead, jolterhead, jumper lead, knucklehead, laverbread, leatherhead, letterhead, live/dead, loaf of bread, lochgilphead, loggerhead, lookahead, lowlihead, lustihead, maidenhead, marblehead, marketstead, marriage bed, merestead, metalhead, metroid dread, mistihead, monkey-bread, monkey bread, mothershead, mothershed, motorhead, muddlehead, multithread, murphy bed, mushroomhead, muttonhead, negrohead, neverdead, newlywed, niggerhead, noodlehead, onion bread, oramed, orange-red, orange red, overbred, overfed, overhead, overspread, overtread, oysterhead, oyster bed, pencil lead, peterhead, petrolhead, phantom thread, pilot bread, pirouetted, pissabed, platform bed, plow ahead, pocket bread, pointy-head, poppy-head, poppyhead, portishead, powerhead, pudden-head, pudding-head, pudding head, purple-red, purplish red, railroad bed, raisin bread, rattlehead, repair shed, riverbed, riverhead, rivethead, rotor head, ruby-red, rudderhead, running head, saddlebred, seeing red, seemlyhed, set ahead, sffed, shades of red, showerhead, sick-abed, silverhead, singlethread, single bed, skillet bread, sleepyhead, slugabed, sofabed, sofa bed, sounding lead, spectramed, staggered head, stagger head, standard-bred, standardbred, straight-ahead, sudafed, swinebread, talking head, thoroughbred, thrust ahead, thunderhead, timberhead, travelstead, trippie redd, trundlehead, trundle bed, tulip bed, turkey red, turnip bed, turtlehead, type-ahead, underbred, underfed, underhead, unionfed, unpruned, wanlockhead, waterbed, waterhead, watershed, water bed, weatherhead, whole meal bread, whole wheat bread, wirehead, woodenhead, woolly-head, yellowhead, zebrahead, zipperhead

4 syllables:
agnes moorehead, anthony head, banana bread, boston brown bread, cinnamon bread, cylinder head, department head, disk overhead, enkerchiefed, eraserhead, false dragonhead, false dragon head, far-infrared, get into bed, heels over head, hospital bed, indian red, italian bread, jewish rye bread, magnetic head, medusahead, near-infrared, nominal head, propellerhead, quilted bedspread, radiohead, rhode island red, seminole bread, skillet corn bread, sugar of lead, swedish rye bread, venetian red, without bloodshed

5 syllables:
alveolar bed, asparagus bed, atomic warhead, bacteria bed, beavis and butt-head, capillary bed, caraway seed bread, caterpillar tread, command overhead, common arrowhead, irish soda bread, mahogany-red, nuclear warhead

6 syllables:
escape from spiderhead

7 syllables:
thermonuclear warhead, vice-admiral of the red

8 syllables:
command processing overhead, mary elizabeth winstead

9 syllables:
anotherloverholenyohead