1 syllable:
-head, bed, bled, bread, bred, dead, dread, dred, dredd, ed, fed, fled, fread, fred, freda, ged, guede, head, jed, kaede, 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, -pede, bead, bede, beede, bleed, brede, breed, breede, caede, cede, cread, crede, creed, dede, deed, deede, diede, dreed, eade, ede, fede, feed, fleadh, fleed, frede, freed, freid, fried, friede, gaede, glead, glede, gleed, grede, greed, he'd, heed, keyed, knead, kneed, leed, leede, mead, meade, nead, need, nied, peed, piede, plead, prede, preed, reed, reede, reid, rheed, ried, riede, s-cry-ed, schede, schmead, schwede, screed, seed, seeed, she'd, sheed, skeed, skied, smead, smeed, snead, sneed, spaed, spead, spede, speed, spreed, steed, streed, swede, teed, thede, theed, thiede, tiede, treed, tweed, veede, vrede, vreid, we'd, weed, weede, wied, wrede

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, blockhead, blood-red, bloodshed, bluehead, bobsled, bolthead, bonehead, boobed, boofhead, bow-head, bowhead, boxhead, braehead, brain-dead, braindead, brain dead, 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, 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, drop dead, 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, 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, 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, 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, stop 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, widespread, wine-red, wingspread, winstead, winsted, woodhead, woodshed, woolhead, wowhead, wronghead, abeed, accede, adrede, agreed, agueweed, aidid, airspeed, alkyd, allseed, almsdeed, amiid, amriid, anteed, arctiid, areed, ashmead, ashweed, asread, atrede, ausrede, axseed, baiid, bebleed, benweed, bergfried, bindweed, birdfeed, blackseed, black bead, bloodweed, blueweed, breast-feed, brighid, brookweed, broom-weed, broomweed, bullweed, bur-reed, burweed, bur reed, buzzfeed, cane reed, canid, capeweed, catchweed, chafeweed, chaffweed, cheerlead, chickweed, clearweed, clotweed, cockweed, coleseed, compeed, concede, cowweed, cpuid, creep feed, cross-breed, crossbreed, cudweed, daneweed, decede, decreed, degreed, delead, deseed, despeed, dev.d, dillweed, dill seed, dill weed, discede, dispeed, ditchweed, ditch reed, dovid, downweed, driftweed, drip-feed, drop-seed, duckweed, dyeweed, elfriede, emceed, emplead, enschede, erede, exceed, expede, expeed, fanweed, fareed, fern seed, fitweed, flambeed, flamsteed, flaxseed, flaxweed, flixweed, float-feed, footspeed, force-feed, force feed, free-reed, french weed, friendfeed, frost-weed, frostweed, gapeseed, ghost weed, gilead, glochid, goateed, goatweed, goodspeed, goutweed, grapeseed, greenweed, groundspeed, growthead, gulfweed, gumweed, hadid, hafid, hag-seed, hagseed, half-breed, halfbreed, hameed, hamid, hand-feed, handfeed, hawkweed, hayseed, heartbleed, high-speed, highspeed, hogweed, horseweed, hurdleed, i.e.d, illbleed, imbreed, impede, implead, inbreed, incede, indeed, infeed, inkneed, itchweed, jameed, jamshid, jereed, jerreed, jetbead, jointweed, kinrede, knack-kneed, knapweed, knock-kneed, knopweed, knotweed, krumwiede, kynrede, laclede, lakeweed, letheed, libid, lightspeed, light speed, limeade, line feed, linseed, lipide, lockheed, lygaeid, m.b.d, madid, markweed, matchweed, matweed, mayweed, milkweed, misdeed, misfeed, mislead, misplead, mistide, moonseed, mugweed, nasheed, naveed, neckweed, netspeed, neuwied, newsfeed, nightbreed, nitweed, nosebleed, notchweed, o.e.d, oarsweed, oarweed, off-speed, oilseed, omead, one-seed, oreweed, outbreed, outrede, outspeed, outweed, pay heed, pearl-weed, pearlweed, pigweed, pine-weed, pineweed, pinweed, pitied, pokeweed, pondweed, precede, preceed, procede, proceed, proofread, purebreed, q.e.d, quirk bead, ragweed, rapeseed, rasheed, rashid, recede, redweed, regrede, remede, reread, reseed, richweed, rockweed, rosemead, saeed, sand reed, sayiid, scratchweed, seaweed, secede, self-seed, shaheed, shahid, siegfried, sightread, silkweed, silpheed, sinead, skunk-weed, skunkweed, smartweed, snakeweed, snapweed, sneezeweed, soap-weed, soapweed, spoon-feed, spoonfeed, squawweed, stall-feed, stampede, stick-seed, stickseed, stickweed, stinkweed, stoneweed, strokeed, subbreed, succeed, suisuide, sweetweed, sybreed, sylpheed, taeniid, take heed, tarweed, tawhid, tee-heed, teelseed, teiid, ten-speed, thamesmead, tick-weed, tickseed, tickweed, tileseed, trusteed, trust deed, two-speed, unfeed, untread, upbreed, uplead, vahid, vandread, waheed, wahid, waleed, walid, wartweed, weak-kneed, wee-weed, whiteweed, white bead, will smeed, windspeed, witchweed, wolfspeed, yaw-weed, zakspeed

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, evil dead, 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, jerkinhead, jollyhead, jolterhead, knucklehead, laverbread, leatherhead, left 4 dead, 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, 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, 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, abcde, agamede, al-adid, al-tawhid, alwaleed, aniseed, anobiid, antecede, appleseed, aristede, aristide, at full speed, beetleweed, beggarweed, benniseed, best-of-breed, bitterweed, bottle-feed, bottlefeed, bugleweed, butterweed, buttonweed, call-by-need, camphorweed, cancerweed, cancer weed, candyweed, cankerweed, capripede, carpetweed, centiped, centipede, cerripede, certainteed, chia seed, chickenfeed, chicken feed, cirrepede, cirripede, clammyweed, colicweed, colorbreed, common reed, copyread, cottonseed, cottonweed, counterplead, crazyweed, crazy weed, crystal reed, dasyatid, devil's weed, dilaudid, diomede, disagreed, double-reed, double reed, dragonspeed, english-weed, enterplead, epicede, estrildid, euphausiid, false ragweed, fennel seed, feverweed, filagreed, filariid, filigreed, fireweed, ganymed, ganymede, garnisheed, gelechiid, getyourguide, giant reed, gossiprede, gravelweed, great duckweed, great ragweed, guaranteed, guarantied, gypsyweed, harris tweed, hatebreed, hoverspeed, hydroseed, hyperspeed, imbureed, interbreed, intercede, intermede, interplead, ironweed, jamestown weed, janjaweed, jewelweed, jimsonweed, jumping seed, let it bleed, locoweed, lymantriid, marsh milkweed, mazdaspeed, mead's milkweed, mesaieed, microbead, millepede, millipede, mini-feed, monacid, mortgage deed, mujtahid, mustard seed, nobody'd, octopede, ophidiid, orangeade, overbreed, overfeed, overlead, overread, overspeed, pedigreed, peyton reed, poke milkweed, polecat weed, poppyseed, poppy seed, pressure feed, prickle-weed, prophesied, pumpkinseed, pumpkin seed, rabbit-weed, rabbitweed, rattleweed, rattle weed, reduviid, refereed, reparteed, retrocede, riverweed, rosinweed, ruaridh, runnemede, runnymede, rurikid, saturniid, scarabaeid, selespeed, silkworm seed, silverweed, singlespeed, star-duckweed, stellerid, stinking weed, supercede, supersede, superspeed, superweed, swamp milkweed, symphilid, tatusiid, thimbleweed, title deed, trumpetweed, trumpet weed, tumble-weed, tumbleweed, tupaiid, undecreed, underfeed, unpitied, velvetweed, walter reed, waterweed, wattleseed, white milkweed, willow-weed, winter-feed, winterfeed, winterweed, womanhede, yellowweed

4 syllables:
agnes moorehead, anthony head, ash vs evil dead, 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, shaun of the dead, skillet corn bread, swedish rye bread, the evil dead, the living dead, those who wish me dead, venetian red, without bloodshed, abdelhamid, al-mu'tadid, anisakid, apostles' creed, assassin's creed, balm of gilead, bella hadid, butterfly weed, canary seed, caraway seed, celery seed, common duckweed, common ragweed, consumption weed, corn gluten feed, diphenamid, dodecafid, edible seed, fenugreek seed, frances shand kydd, gigi hadid, gracilariid, hemerobiid, horsetail milkweed, house centipede, jabesh-gilead, joel embiid, lesser duckweed, libellulid, megatheriid, oliver reed, orange milkweed, oribatid, pickerelweed, pickerel weed, pineapple weed, poeciliid, poison milkweed, ramoth-gilead, rattlesnake-weed, rattlesnake weed, rebamipide, safflower seed, scorpionweed, scorpion weed, sesame seed, showy milkweed, star aniseed, sunflower seed, tettigoniid, trombiculiid, turpentine weed, unguaranteed, unpedigreed, usamriid, velocipede, vinegarweed, water flaxseed, western ragweed, zaha hadid

5 syllables:
alveolar bed, army of the dead, asparagus bed, atomic warhead, bacteria bed, beavis and butt-head, capillary bed, caraway seed bread, caterpillar tread, command overhead, common arrowhead, fear the walking dead, highschool of the dead, irish soda bread, mahogany-red, nuclear warhead, alligator weed, anomalipede, berwick-upon-tweed, coriander seed, execution speed, garden centipede, gulshan-e-hadeed, rheumatism weed, taj-ul-masajid, yolanda hadid

6 syllables:
escape from spiderhead, night of the living dead, egyptian paper reed, khalid ibn al-walid, mohamed hadid, operation warp speed, perennial ragweed

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

8 syllables:
command processing overhead, mary elizabeth winstead

9 syllables:
anotherloverholenyohead, the detective is already dead