2 syllables:
ayer, beier, bleier, breier, briar, briare, brier, bryer, buyer, buy her, byer, by her, choir, criar, crier, cryer, dire, diyer, dreier, drier, dryer, dwyer, dyar, dyer, eyer, feier, fire, flier, flyer, friar, frier, fryar, fryer, geier, grier, guier, guyer, heier, hier, hier-, higher, hire, hyer, iyer, kleier, klier, krier, kyer, leier, liar, maiar, meier, meyer, mier, mire, myer, neier, nigher, plier, plyer, prier, prior, pryer, pryor, pyre, ryer, scheier, schier, schleier, schmier, schneier, schnier, schreier, schrier, schryer, schwier, scryer, seier, shier, shyer, sigher, sire, skyer, slier, slyer, smyer, speier, spier, sprier, spryer, squier, steier, stier, styer, swier, trier, twire, twyer, tyer, viar, why're, why her, wigher, wire, wrier, wryer, wyer

3 syllables:
acquire, air fryer, applier, appsflyer, appuyer, attire, barbed wire, bitflyer, blackfriar, black friar, blow-dryer, blowdryer, bonfire, brush fire, bullbrier, call fire, campfire, capire, catch fire, cease-fire, ceasefire, clothes dryer, complier, condire, confiar, conspire, crachoir, cross wire, crown fire, decrier, defier, denyer, deny her, descrier, desire, destrier, dewier, disfriar, dog-brier, doubtfire, ebuyer, edayar, enfire, enfriar, ennuyer, enquire, entire, essuyer, etrier, figuier, foxfire, fratire, frohnmayer, gestire, gipsire, gray friar, greek fire, greenbriar, greenbrier, ground fire, gunfire, hairdrier, hairdryer, hair dryer, hardwire, harmeyer, hayes grier, high-flier, high-flyer, highflier, highflyer, high wire, homebuyer, home buyer, horse-brier, horsebrier, hotwire, ipfire, jetfire, jon cryer, kiteflier, live wire, longmeyer, madrier, massed fire, mcbryar, mcguyer, mctier, mediar, misfire, nash grier, norsefire, odwyer, on fire, partyer, pimplier, pinfire, pochoir, portfire, ps-05/a, quagmire, red fire, refire, relier, replier, replyer, require, retire, rewire, sarplier, satire, shahriar, shanghaier, souscrire, spare-tire, spedire, spin-drier, spin-dryer, spin drier, spin dryer, spitfire, starflyer, stunt flier, sucrier, supplier, sure-fire, sweetbriar, take fire, tawdrier, town-crier, town crier, transpire, trip wire, uighur, umpire, untier, unwire, variar, verier, watch fire, white friar, whitmyer, wildfire, will grier, zone fire

4 syllables:
advertir, amplifier, antechoir, arcade fire, arthrodire, austin friar, avodire, ayrshire, baling wire, ball of fire, barrage fire, basifier, beacon fire, beautifier, boutonnire, calendrier, cammermeyer, cannon fire, certifier, clarifier, classifier, coconspire, codifier, contredire, crucifier, cualquier, danny dyer, deifier, densifier, didemeyer, direct fire, disattire, dixie fire, dubilier, edifier, eggemeyer, falsifier, forest fire, fortifier, frequent-flier, fructifier, gasifier, glorifier, gratifier, grazing fire, horrifier, impedire, jackie speier, justifier, kinzlmaier, lars von trier, line of fire, liquefier, ls3/5a, magnifier, markiplier, mattifier, modifier, mollifier, monifier, mortar fire, mortifier, multiplier, mystifier, nitrifier, notifier, nullifier, nyanpire, observed fire, occupier, openfire, open fire, ossifier, ostermeyer, pacifier, prettifier, purifier, qualifier, quantifier, r. budd dwyer, radar fire, ratifier, rectifier, sanctifier, sanguifier, satisfier, scarifier, scheduled fire, scorifier, searching fire, set on fire, signal fire, signifier, simplifier, specifier, speechifier, staffordshire, streets of fire, stultifier, surefire, surface fire, tackifier, terrifier, terrifyer, testifier, the good liar, trasgredire, tumble-dryer, typifier, unattire, underlier, under fire, unifier, unretire, verifier, versifier, vivandire, vivifier, washer-dryer, wedemeyer, yzaguirre

5 syllables:
acetifier, acidifier, calorifier, complexifier, conducting wire, covering fire, decalcifier, demulsifier, denitrifier, destruction fire, detoxifier, disqualifier, diversifier, electric fire, electrifier, emulsifier, exemplifier, harassing fire, humidifier, identifier, indemnifier, indirect fire, infastidire, intensifier, mrs. doubtfire, natalia dyer, opacifier, outside the wire, personifier, piano wire, postmodifier, preamplifier, premodifier, saponifier, selective-fire, self-justifier, solidifier, st. elmo's fire, supporting fire, telegraph wire, telephone wire, the daily wire, wings of desire, yarnell hill fire

6 syllables:
alexisonfire, antiaircraft fire, artillery fire, booster amplifier, close supporting fire, concentrated fire, crystal rectifier, deep supporting fire, distributed fire, garena free fire, grenfell tower fire, interdiction fire, junction rectifier, owner-occupier, photomultiplier, preparation fire, registration fire, saint anthony's fire, sexual desire, thermomultiplier

7 syllables:
audio amplifier, a song of ice and fire, direct supporting fire, electron multiplier, naive bayes classifier, neutralization fire, reconnaissance by fire, the station nightclub fire, we didn't start the fire

8 syllables:
2008 universal fire, notre-dame de paris fire

9 syllables:
ecclesiastical attire, portrait of a lady on fire

11 syllables:
2008 universal studios fire

2 syllables:
hirer