1 syllable:
air, ar, are, ayr, bar, bare, barr, barre, bear, beer, bier, birr, blair, blare, blear, blur, boor, bur, burr, car, care, carr, chair, char, cheer, chirr, churr, claire, clear, cur, cure, czar, dare, dear, deer, dire, doer, dour, dower, drear, ear, er, err, fahr, fair, far, fare, fear, fehr, fir, fire, flair, flare, flour, freyr, fur, gar, gear, gere, glare, greer, grier, hair, hare, hear, heir, here, herr, hire, hour, ire, jar, jeer, jour, lair, lear, loire, lour, lure, lyre, maher, mar, mare, meir, mere, mir, mire, moire, moor, murre, myrrh, ne'er, near, pair, par, pare, parr, pear, peer, per, pier, poor, prayer, pure, purr, queer, quire, r, r., rare, rear, ruhr, scar, scare, schmear, scour, sear, seer, sere, share, shear, sheer, sherr, shire, shirr, shmear, sir, slur, smear, snare, sneer, sour, spar, spare, spear, sphere, spire, spoor, spur, square, squire, stair, star, stare, starr, steer, stir, sure, swear, tar, tear, their, there, they're, tier, tour, tsar, tyre, veer, voir, ware, we're, wear, weir, were, where, whirr, wire, year, you're

2 syllables:
abjure, adar, adhere, adjure, admire, affair, affaire, afire, aflare, allure, amir, amour, anshar, appear, asarh, ashir, aspire, assur, assure, astaire, astir, athar, austere, aware, babar, bazaar, bazar, besmear, beware, bihar, bizarre, bonaire, bonheur, bonior, brochure, brumaire, bugbear, career, cashier, chauffeur, cigar, co-star, cohere, coiffeur, coiffure, compare, compeer, compere, concur, confer, cooccur, cottar, couture, dakar, damar, danseur, debar, declare, defer, demur, demure, derriere, despair, deter, detour, devoir, dinar, disbar, downstair, eclair, emir, endear, endure, ensnare, ensure, exmoor, expire, fakeer, flexure, footgear, footsure, forbear, forswear, foursquare, frontier, frotteur, grandeur, gravure, grimoire, guinier, guitar, hachure, handwear, horsehair, hot-wire, houhere, immure, impair, impure, incur, infer, inhere, inquire, inspire, insure, inter, inure, jamjar, kaffir, kildeer, killdeer, kotar, lamar, liqueur, longueur, lontar, manure, markhoor, mature, menhir, midair, moliere, monsieur, myanmar, nervure, nightjar, nuphar, o'hare, obscure, occur, parterre, pasteur, peignoir, perspire, pierre, pindar, poseur, prefer, premier, premiere, prepare, procure, pushchair, qatar, rancour, recur, refer, rehear, repair, require, respire, rest-cure, retire, revere, rigour, safar, safire, sambar, sambur, sapir, secpar, secure, seigneur, selar, severe, shamir, shophar, sightseer, sincere, sitar, soilure, succour, t-square, tangier, tarsier, testiere, tonsure, transfer, trochlear, unclear, unfair, unsure, upstair, vanir, velour, veneer, vidar, vigour, vitharr, voltaire, voussoir, voyeur, wafture, wasteweir, wheatear, yasir, zaire

3 syllables:
abampere, abattoir, aide-memoire, air-to-air, amanpour, auctioneer, baccilar, balladeer, bandoleer, bandolier, basketeer, baudelaire, belshazzar, belvedere, billionaire, blackamoor, bombardier, brigadier, buccaneer, cannoneer, cavalier, chandelier, chevalier, chinaware, cockleburr, coinsure, commandeer, connoisseur, debonair, debonaire, debonnaire, disappear, disrepair, doctrinaire, domineer, elaphure, embouchure, encolure, engineer, escritoire, financier, gadgeteer, gazetteer, gomphothere, gondolier, gondoliere, guinevere, halberdier, harpooneer, hekmatyar, immature, insincere, interfere, isobar, kieselguhr, laissez-faire, lavalier, megathere, microbar, millionaire, minibar, muleteer, musketeer, mutineer, npr, open-air, overbear, overhear, pamphleteer, paramour, persevere, pied-a-terre, pioneer, pistoleer, porte-cochere, premature, presbyter, privateer, profiteer, puppeteer, questionnaire, racketeer, raconteur, reappear, reassure, reinsure, restaurateur, saboteur, samovar, savoir-faire, scimitar, scrutineer, secretaire, sinecure, sloganeer, solitaire, sonneteer, souvenir, superstar, tamanoir, unaware, volt-ampere, volunteer, wirehair

4 syllables:
candidature, carabineer, charioteer, commissionaire, concessionaire, conservatoire, conventioneer, dyaus-pitar, entrepreneur, kala-azar, liquidambar, litterateur, milliampere, photogravure, rotogravure, supersedure, surface-to-air, uintathere, ulaanbaatar

5 syllables:
heliogravure, kilovolt-ampere