1 syllable:
-phore, -ster, -word, b-word, bir, birr, blur, brisure, bur, burr, c-word, chier, chir-, chirr, chirre, churr, chvre, cirrh, clbre, cur, der, dirr, duhr, durr, er, eure, f-word, fer, ferr-, feur, fhrer, firre, flere, fleur, flneur, fluhr, frisure, fur, furr, furrh, gurr, her, hksar, hur, jerr, jstor, k-lor, k-word, ker, kerr, klear, kshmr, kuhr, luhr, mller, mnster, murr, murre, myrrh, myrrhe, nurr, nurre, pdf/a, per, pere, phore, phthor, plurr, prtor, pter-, pur, purr, purre, r-word, rmdir, s-word, scher, schnuller, schnur, schnurr, schreur, schur, schurr, schwer, schwur, scler, sher, shir, shirr, shur, shurr, sieur, sir, skirr, sklere, slur, smirr, spher, spur, spurr, squir, squirr, stir, stirr, stuhr, sur, swor, ter, thur, tl;dr, twere, ur, ver, we're, were, wh-word, whirr, yer

2 syllables:
ampere, ardeur, bonheur, boxeur, broyeur, by-word, campeur, catch-word, causeur, censeur, chanteur, charmeur, chauffeur, chembur, chesshir, chou-fleur, claqueur, code-word, cofer, coiffeur, commere, concur, confer, cooccur, craseur, credeur, curseur, danseur, defer, defleur, demeure, demur, deter, diseur, dpanneur, dufur, erreur, esquer, excur, faveur, fiverr, flaneur, fraischeur, francoeur, friseur, froideur, fumeur, geschirr, graveur, harfleur, honfleur, honneur, horreur, humeur, icurr, incur, infer, inter, jagir, joint-fir, lafleur, largeur, larkspur, lefleur, liqueur, longspur, longueur, malheur, marqueur, mccur, mcgirr, mineur, monsieur, mugir, mushir, n-word, naveur, nonce-word, o'clair, occur, oclair, odeur, osburh, pass-word, payeur, plongeur, poseur, prefer, preneur, primeur, puanteur, ramseur, ranseur, recur, refer, rgisseur, robur, rongeur, sambur, saveur, scanneur, seigneur, serveur, shamshir, siffleur, sigir, soigneur, souffleur, stupeur, tampere, teneur, terreur, tiqueur, tourneur, tozeur, transfer, trouveur, tumeur, ungir, upstir, vainqueur, vapeur, videur, viveur

3 syllables:
additionneur, adoucir, affineur, amateur, armbanduhr, arrangeur, arroseur, ascenseur, asistir, assureur, bagarreur, bellefleur, brocanteur, brunanburh, butineur, camoufleur, cascadeur, chroniqueur, co-occur, cockle-burr, cockleburr, connaisseur, connoisseur, conteneur, courmayeur, croque-monsieur, depanneur, derbyshire, desistir, diviseur, donateur, ecraseur, el-aksur, escrimeur, existir, fondateur, gouverneur, imprimeur, ingenieur, insistir, investir, joueur, kieselguhr, littrateur, manastir, mercosur, migraineur, millefleur, mompreneur, monastir, monseigneur, nilambur, orateur, overwore, persifleur, persistir, predecir, procureur, programmeur, prosateur, raisonneur, ramoneur, randonneur, redifer, regisseur, reincur, renifleur, reoccur, restauranteur, restaurateur, saboteur, shamateur, shuldiner, silencer, souteneur, spoken-word, summerstir, telesur, voltigeur, voyageur, wetransfer, whisperer, word-for-word

4 syllables:
adaptateur, admirateur, alternateur, ambassadeur, aspirateur, atomiseur, autocuiseur, calculateur, camionneur, carburateur, carillonneur, catalyseur, chikmagalur, coexistir, collaborateur, collectionneur, dessinateur, dimmuborgir, entrepeneur, entrepreneur, entreupreneur, explorateur, hypnotiseur, infopreneur, intrapreneur, kodungallur, litterateur, nanganallur, operateur, ordinateur, radiateur, technopreneur, topinambur

5 syllables:
accumulateur, adichanallur, conglomerateur, sholinganallur, usnaveur

1 syllable:
deer, bear, pare, lore, more, score, loire, dare, poor, lour, gore, torr, rear, door, blair, mir, wear, bore, weir, for, ar, fair, jar, year, moore, tyre, dire, air, par, whore, crore, boer, veer, queer, snore, glare, blare, drear, ne'er, drawer, flair, spar, gear, sphere, boar, mar, hare, lear, war, chore, cheer, square, flare, core, store, star, lair, err, spore, boor, far, dower, near, oar, steer, sore, tier, ore, sure, mare, corps, jeer, yore, pair, share, stair, schmear, there, snare, wore, pore, soar, moor, they're, stare, shore, floor, hair, gar, sear, ear, meir, cure, spear, fare, their, four, car, herr, ayr, sneer, doer, quire, fear, fore, squire, or, tear, shear, swear, carr, scar, your, prayer, spare, bier, parr, care, czar, shire, sheer, tor, pour, chair, rare, claire, bare, tsar, spoor, lyre, tore, hear, sere, ware, mire, are, ire, beer, scare, blear, starr, char, clear, dear, pure, moire, ruhr, hoar, you're, seer, lure, mere, thor, heir, nor, pear, peer, spire, smear, here, swore, bar, tar, where, tour, roar, barr, pier, fahr, fehr, freyr, gere, greer, grier, jour, lohr, maher, r, r., schorr, sherr, shmear, voir

2 syllables:
khmer, brochure, lekvar, appear, austere, unfair, sour, grimoire, aware, impure, compere, secure, nightjar, velour, impair, insure, guitar, amir, barre, myanmar, brumaire, skier, respire, sitar, qatar, rapport, career, hire, midair, ensure, affair, scour, pasteur, assure, immure, bazaar, afire, hour, aspire, adjure, amour, compare, galore, senor, pierre, vigour, unclear, endear, inshore, premier, safar, disbar, offshore, unsure, prepare, babar, unbar, deplore, frontier, inquire, inure, postwar, endure, saviour, cashier, grandeur, inspire, ignore, retire, beware, rehear, repair, sincere, restore, tumour, adore, frimaire, bizarre, dakar, abhor, couture, cohere, valour, ensnare, fire, voltaire, declare, wire, dinar, bazar, foursquare, severe, dour, flour, compeer, prewar, zaire, detour, mature, obscure, before, qintar, fervour, ashore, procure, emir, vapour, explore, manure, forswear, flavour, veneer, demure, premiere, affaire, perspire, despair, decor, revere, adhere, savour, voyeur, allure, admire, implore, expire, adar, cigar, abjure, abor, aflare, anshar, asarh, ashir, assur, astaire, astir, athar, besmear, bihar, bonaire, bonior, bugbear, cared-for, co-star, coiffure, cottar, damar, debar, derriere, devoir, downstair, eclair, exmoor, fakeer, flexure, footgear, footsure, forbear, fourscore, frotteur, gravure, guinier, hachure, handwear, horsehair, hot-wire, houhere, igor, inhere, jamjar, kaffir, kildeer, killdeer, kotar, lamar, languor, lenore, longed-for, lontar, markhoor, menhir, moliere, nervure, nuphar, o'hare, outroar, outscore, parterre, peignoir, pindar, pushchair, rancour, rest-cure, rigour, safire, salvor, sambar, sapir, secpar, selar, shamir, shophar, smoothbore, soilure, succour, t-square, tangier, tarsier, testiere, threescore, tonsure, trochlear, tussore, twoscore, upstair, vanir, vidar, vitharr, voussoir, wafture, wasteweir, wheatear, yasir

3 syllables:
balladeer, guarantor, quadrature, buccaneer, overhear, verdure, polypore, npr, bombardier, reappear, puppeteer, engineer, ameer, pamphleteer, reinsure, billionaire, chandelier, superstar, doctrinaire, chevalier, souvenir, raconteur, disappear, millionaire, cavalier, anymore, solitaire, mutineer, require, pioneer, insincere, musketeer, escritoire, commandeer, persevere, premature, gondolier, immature, volunteer, profiteer, questionnaire, domineer, disrepair, interfere, underscore, bandolier, racketeer, heretofore, sightseer, financier, brigadier, reassure, unaware, debonair, auctioneer, belvedere, abampere, abattoir, aide-memoire, air-to-air, allosaur, amanpour, ankylosaur, archosaur, baccilar, bandoleer, barosaur, basketeer, baudelaire, belshazzar, blackamoor, brontosaur, cannoneer, chinaware, coinsure, debonaire, debonnaire, elaphure, embouchure, encolure, ex-mayor, gadgeteer, gazetteer, gomphothere, gondoliere, guinevere, hadrosaur, halberdier, harpooneer, hekmatyar, hoped-for, isobar, laissez-faire, lavalier, looked-for, man-of-war, megathere, microbar, minibar, muleteer, nothosaur, open-air, overbear, paramour, pied-a-terre, pistoleer, plesiosaur, porte-cochere, presbyter, privateer, pterosaur, re-explore, samovar, savoir-faire, scimitar, scrutineer, secretaire, seismosaur, sinecure, sloganeer, sonneteer, stegosaur, tamanoir, tug-of-war, uncalled-for, volt-ampere, warrantor, wirehair, wished-for, yearned-for

4 syllables:
uncared-for, charioteer, concessionaire, ichthyosaur, conventioneer, apatosaur, candidature, carabineer, ceratosaur, commissionaire, conservatoire, corythosaur, dromaeosaur, dyaus-pitar, ictodosaur, kala-azar, liquidambar, milliampere, pelycosaur, photogravure, psittacosaur, rotogravure, staurikosaur, styracosaur, supersedure, surface-to-air, tyrannosaur, uintathere, ulaanbaatar, unhoped-for, unlooked-for, unwished-for

5 syllables:
rectilinear, interlinear, heliogravure, kilovolt-ampere

6 syllables:
pachycephalosaur