1 syllable:
-phone, blown, boan, boann, boehne, boen, bohn, bohne, bown, bowne, chone, clone, coan, cohn, cone, croan, crone, doan, doane, doanh, don't, drone, drone', flown, foehn, fone, goan, goen, groan, groen, grone, grown, hoehn, hoehne, hoen, hone, joan, joane, jone, kl-one, kloehn, known, koehn, koehne, koen, kohne, krohn, loan, lone, mbone, moan, moen, mon, mone, oanh, own, phone, plohn, prone, r-zone, rclone, rhone, roan, roane, roanne, roen, rone, schoen, schone, scone, sewn, shone, shown, sloan, sloane, slone, soane, sown, sowne, stone, strown, swown, thoen, thone, throne, thrown, tone, trone, yonne, zone

2 syllables:
aczone, aimone, airfone, aitchbone, algestone, alone, anthrone, argoan, argonne, arone, astone, athlone, atone, axstone, backbone, barbone, barebone, barone, barrone, bastogne, bayonne, bedstone, bemoan, beshone, besogne, best-known, bilestone, birdstone, birthstone, bizone, blackphone, blackstone, bladebone, bloodstone, bluestone, blue stone, blystone, bologne, bondstone, bouffon, boulogne, bourgogne, boyzone, bozon, breakstone, breastbone, bridgestone, brookstone, brownstone, buffon, buhrstone, burrstone, burstone, c-clown, cadrone, calf-bone, calfbone, call loan, camstone, capone, capstone, carbone, cardphone, carone, cartone, catone, cell-phone, chalk-stone, chalkstone, chalkzone, chalone, charogne, cheekbone, chest tone, chinbone, chinlone, chockstone, cigogne, cirone, claystone, clingstone, clinkstone, co-own, cobstone, coloane, cologne, condone, copestone, cornstone, cotone, cross-stone, crotone, crowstone, croylstone, cubone, curbstone, cyclone, daidone, damone, darkstone, darkthrone, debone, demone, dethrone, dhrystone, dialtone, dibstone, dijon, diketone, diphone, disown, disthrone, doorstone, dordogne, downthrown, dragone, drakestone, dreadzone, dripstone, dropstone, dropzone, drop scone, drop zone, dry-stone, drystone, dumbphone, earphone, ebone, edgebone, end-blown, enstone, enthrone, evzone, eyestone, fairphone, farone, felstone, fieldstone, finestone, fionn, firestone, fir cone, fishbone, flagstone, flesh-n-bone, flintstone, floatstone, flowstone, fly-blown, flyblown, folkestone, folkstone, footstone, foreshown, freefone, freestone, free zone, full-blown, full-grown, fullblown, gallstone, gamone, garone, gemstone, gladstone, glenstone, godstone, godzone, goldstone, goldtone, grapestone, grass-grown, grauzone, gravestone, graystone, greenbone, greenstone, greystone, greyzone, grindstone, gritstone, gunstone, hailstone, half-grown, half-tone, halftone, hambone, handblown, handphone, handsewn, headphone, headstone, head tone, hearthstone, heelbone, hellphone, heptone, high-blown, high-flown, hipbone, histone, hoarstone, home-grown, homegrown, hormone, hornstone, hurlbone, i-phone, inblown, ingrown, inkstone, instone, inthrone, intone, iphone, irone, ivrogne, jackstone, jadestone, jambone, jawbone, jeroen, jetstone, jewstone, johnstone, juglone, kalkoen, kerbstone, keystone, kingstone, klinkstone, kneebone, knockstone, kotone, ladrone, lapstone, latrone, leone, lightstone, lightzone, limestone, limone, linphone, loadstone, lodestone, lung-grown, lupone, madrone, maidstone, maimone, malone, mamon, mamone, marlstone, marone, masone, mazon, mazone, mccone, mccrone, mcglone, mchone, mckone, mckown, mearstone, medstone, meerestone, melloan, meloen, mentone, merestone, miilkbone, milestone, miljoen, milk-bone, millstone, milone, mione, miss sloane, montrone, moonstone, moorstone, morone, moss-grown, mosstone, mudbone, mudstone, nalbone, neurone, new-mown, nose cone, nutone, o-zone, ochone, ohlone, ohone, oilstone, one-one, outblown, outflown, outgone, outgrown, outshone, ozone, palone, paone, pavone, pay-phone, payphone, pearlstone, peastone, peptone, perone, picone, pilone, pipestone, pirone, pitchstone, plasmon, pneumon, polmone, pologne, postpone, potstone, poundstone, prezone, prozone, pure tone, quern-stone, quernstone, qzone, ra.one, ragstone, rainone, ramon, ramone, rathbone, raton, rawbone, redbone, redstone, red joan, regrown, reloan, resown, rezone, rhinestone, rhymezone, rhyme zone, richstone, ridgebone, ringbone, risk-prone, roestone, rubstone, runestone, salone, sandstone, saone, satphone, scavone, scimone, scrubstone, scythestone, self-sown, serzone, shade-grown, shankbone, sharebone, sharon, shenstone, shiftphone, shinbone, shirone, sidebone, sidetone, silone, siltstone, simone, smartphone, snake-stone, snakestone, snowclone, soapstone, softphone, spadebone, spallone, spumone, stallone, starstone, stepstone, stinkstone, storm cone, subzone, sulfone, sulphone, sunstone, swinestone, t-bone, t-zone, tail-bone, tailbone, tbone, techmoan, test-flown, testone, textphone, thigh-bone, thighbone, thujone, tigtone, tilestone, time loan, time zone, tinstone, tirone, toadstone, tombstone, topstone, touch-tone, touchstone, treadstone, tripestone, trombone, truphone, turnstone, twelve-tone, two-tone, twotone, tyrone, unblown, unbone, unknown, unsewn, unshown, unsown, unthrone, valone, vanloan, vanstone, varone, veinstone, veldskoen, velskoen, viewphone, warzone, webphone, wedgestone, well-known, wellstone, well known, wheatstone, whetstone, whinstone, whirlbone, whitestone, whole tone, windblown, winstone, wishbone, woodstone, xanthone, yarchoan

3 syllables:
acetone, addlestone, aerophone, agapemone, all-in-one, allomone, allophone, amarone, amazone, ambisone, amerzone, amicone, ampyrone, anglophone, anklebone, ansafone, ansaphone, answerphone, antiphone, antozone, anzalone, aquatone, arctic zone, argemone, asarone, atherstone, audiphone, autochtone, autozone, avallone, bannerstone, barbitone, bariton, baritone, barytone, bellibone, better-known, better known, bishop's throne, bladder stone, blattnerphone, borazon, bourguignon, bourguignonne, bred-in-the-bone, bridget sloan, bristlecone, businessphone, buspirone, butyrone, cabezone, caboloan, cairngormstone, calcedon, calderon, caledon, cameraphone, cancion, canrenone, cardamone, catrambone, celestone, chalcedon, chaperon, chaperone, cherrystone, chicagoan, china stone, chordophone, ciccarone, cicerone, cipollone, cobblestone, collar-bone, collarbone, combat zone, coping stone, coppertone, copplestone, corazon, corleone, corner-stone, cornerstone, cortisone, coumarone, coverstone, cuajone, cumarone, cuttlebone, danger zone, daxophone, demand loan, demitone, dentiphone, diaclone, dial phone, diaphone, dictaphone, dipyrone, direct loan, disco-zone, disenthrone, dolostone, dopethrone, dronedarone, dropping zone, duotone, dyspeptone, eaglestone, ecclestone, ecotone, eddystone, electone, entryphone, epigone, epiphone, error-prone, eskimoan, ethion, euchrone, eupittone, eurozone, featherbone, featherstone, fiadone, filippone, flexatone, flutaphone, foreknown, francophone, freephone, frigid zone, fully-grown, fully grown, fundacion, fungizone, funktion-one, funnybone, garramone, geophone, girdlestone, glycerone, gramaphone, grameenphone, gramophone, graphophone, gravel-stone, growth hormone, gtraystone, hackerone, halazone, hammerstone, haute-saone, heckelphone, hemitone, heptanone, herring-bone, herringbone, hold one's own, holystone, homophone, honeystone, hucklebone, hydrazone, hydrophone, hyperon, idahoan, ilosone, interphone, interzone, irestone, ironstone, isochrone, isotone, jaigaon, jellystone, jesusphone, jurdiccion, kairomone, kameroen, kampioen, khornerstone, kidney stone, knucklebone, lagerphone, launcherone, leading-tone, leading tone, lesser-known, let-alone, let alone, levinstone, leytonstone, lithophone, little-known, liver-grown, livingstone, living stone, loading zone, lusophone, macaron, maccarone, macedon, macrotone, magnatone, making known, mandlestone, mantion, margarone, marrowbone, mcelhone, megaphone, mellophone, mephedrone, metaphone, methadon, methadone, methodrone, microloan, microphone, microtone, mifepristone, monkeybone, monotone, morricone, moviefone, movietone, muscle tone, musimon, myristone, nabilone, naigaon, needlestone, norethindrone, novantrone, of her own, of his own, of one's own, of their own, of your own, oleone, one-and-one, one-for-one, one-to-one, on her own, on his own, on one's own, on their own, on your own, optophone, orthotone, osazone, overblown, overflown, overgrown, oversewn, overthrown, overtone, palmitone, panettone, pantalone, paragone, parlophone, passing tone, paving stone, peacock-throne, pebblestone, penistone, pentatone, pepitone, pepperstone, perlemoen, persephone, pettibone, phenazone, pheromone, photophone, pinephone, pipitone, plant hormone, podcastone, polar zone, polyphone, post malone, prasterone, precious stone, prohormone, promegestone, propeptone, pudding-stone, puddingstone, pudding stone, pumice stone, pyrophone, quarrystone, quarter-tone, quartertone, quinhydrone, reenthrone, reflectone, reggaeton, reinthrone, rent-to-own, rhythmone, ringlestone, rocking-stone, rollingstone, romanone, rotenone, rottenstone, rubblestone, saccharone, safety zone, salamone, salamstone, sauce-alone, saxaphone, saxofone, saxophone, scopitone, semiprone, semitone, sesquitone, sex hormone, silicone, silverstone, silvertone, sinophone, six4one, sojabohne, sousaphone, speakerphone, spectrophone, sphygmophone, stand-alone, standalone, stepping-stone, steppingstone, stepping stone, sticks and stone, storytone, stumbling-stone, stylophone, suberone, superbone, systemone, tautochrone, techniphone, telephone, temperate zone, testimone, tetrazone, thermophone, thunderstone, tidal zone, timezone, tisiphone, toblerone, topophone, torrid zone, two-to-one, unbeknown, underbone, undergroan, undergrown, undertone, unforeknown, verifone, veritone, vibraphone, vicetone, vitaphone, vodafone, watch the throne, waterphone, waterstone, weatherstone, windows phone, wizardthrone, xylitone, xylophone, yellowstone, zacaton, zombie-loan

4 syllables:
accident-prone, aceyalone, actinophone, adrenalone, aldosterone, amazonstone, amfepramone, amphopeptone, androsterone, antarctic zone, anticyclone, antihormone, antipeptone, audioone, auxetophone, azaperone, bananaphone, bass-baritone, benzbromarone, bongaigaon, bouches-du-rhone, brachistochrone, brachystochrone, brody malone, cefoperazone, cellular phone, central time zone, chiapparone, chlorzoxazone, cinnamon stone, clascoterone, climatic zone, concepcion, construccion, consumer loan, cynoscion, deferiprone, detectaphone, dimethisterone, dinoprostone, direccion, dr. stone, eastern time zone, eau-de-cologne, eau de cologne, ectohormone, edaravone, electrophone, emery stone, enoximone, entacapone, enterprise zone, ethisterone, executone, federacion, find my iphone, flowering stone, foundation-stone, foundation stone, french telephone, germanophone, hardwarezone, hemiditone, hemipeptone, hispanophone, hydraulophone, hydrocortone, hydrocyclone, hydromorphone, hymecromone, ideophone, idiophone, infeccion, isanemone, jackson rathbone, jena malone, john basilone, kaleidophone, kinetophone, lamellophone, littoral zone, lubiprostone, membranophone, mesocyclone, metacetone, metallophone, metapeptone, metaxalone, methaqualone, methasterone, methisazone, metolazone, mitoxantrone, mountain time zone, nabumetone, nefazodone, neurohormone, north frigid zone, north temperate zone, nutricion, of our own, osteophone, ostracion, otamatone, oxazolone, oxymorphone, parahormone, parapeptone, parathormone, pentamerone, personal loan, photographone, phytohormone, picturephone, playerunknown, polysulfone, progesterone, proteccion, pyrazolone, quinethazone, quirkyalone, radiophone, retinal cone, rosetta stone, rue anemone, sarrusophone, savings and loan, sea anemone, semiditone, sentinelone, sonargaon, south frigid zone, south temperate zone, steroid hormone, subsemitone, sunny leone, superunknown, symballophone, telegraphone, testosterone, thyroid hormone, tropical zone, truncated cone, upper jawbone, videophone, wood anemone

5 syllables:
adrenosterone, airtel-vodafone, alluvial cone, alpine anemone, amfebutamone, amiodarone, asparagus-stone, biophotophone, bromoacetone, cdmaone, chalon-sur-saone, chloroacetone, conversazi-one, corporacion, corticosterone, crystal microphone, cyclohexanone, deoxycortone, dial telephone, diaz-calderon, dydrogesterone, false rue anemone, fludrocortisone, fluoxymesterone, genus anemone, human growth hormone, hydrocortisone, internecion, metandienone, methandienone, mountain anemone, n.a.t.i.o.n., nitrofurazone, norethisterone, oxymesterone, pacific time zone, pentobarbitone, phenobarbitone, phenylacetone, phenylbutazone, philosopher's stone, pioglitazone, prairie anemone, prakash padukone, propyliodone, propyphenazone, quinalbarbitone, revolucion, robert w. malone, romancing the stone, rosiglitazone, semicarbazone, sierra leone, sulfinpyrazone, thioacetone, umbelliferone, vito corleone, wireless telephone

6 syllables:
acetylacetone, alicia silverstone, aminophenazone, amylobarbitone, archive of our own, canada anemone, cellular telephone, condenser microphone, deepika padukone, dihydrocodeinone, element of a cone, epiandrosterone, epitestosterone, geographical zone, methyltestosterone, n-ethylhexedrone, natascha mcelhone, nitromethaqualone, oxyphenbutazone, participation loan, radio-gramophone, radiotelephone, videotelephone

7 syllables:
aleutian subduction zone, capacitor microphone, chernobyl exclusion zone, dihydrotestosterone, dihydroxyacetone, hydroxyprogesterone, medroxyprogesterone, sly and the family stone

8 syllables:
dehydroepiandrosterone, dehydroisoandrosterone, deoxycorticosterone, desoxycorticosterone, thenoyltrifluoroacetone

9 syllables:
capital of sierra leone, follicle stimulating hormone, korean demilitarized zone