3 letters:
eir, gyr, ire

4 letters:
dire, fire, hire, hyre, lyre, meir, mire, myre, tyre, wire, wyre

5 letters:
afire, dwire, guire, phyre, quire, retir, scire, shire, smyre, spire, swire, whyre, xfire

6 letters:
1-wire, admire, alkire, aquire, aspire, beijer, bemire, dehire, dipyre, elvire, empyre, expire, finire, gleire, impire, intire, navire, rehire, retire, rivire, safire, squire, striar

7 letters:
abshire, alamire, amortir, binaire, bushire, collyre, esquire, fedwire, fesmire, foxfire, frymire, gunfire, haywire, inquire, inspire, isopyre, jaghire, kintyre, maguire, martyre, mcguire, mcquire, o'dwyer, outhire, pismire, pugmire, require, respire, rimfire, saffire, saltire, saphire, sentire, servire, sunfire, tacfire, vampyre, waymire

8 letters:
archwire, ash-fire, backfire, balefire, barbwire, bushfire, cafetire, camphire, cookfire, dishfire, drumfire, fen-fire, firewire, foxmeyer, glenayre, goldwire, guy-wire, hamshire, hangfire, headtire, hehmeyer, hellfire, highwire, hot-wire, lifewire, limewire, linspire, livewire, loudwire, mcintire, mcintyre, megafire, missfire, nanowire, needfire, newswire, ohlmeyer, outcrier, overtire, perspire, pickmire, pin-fire, pipewire, proxmire, racamier, rim-fire, samphire, schreyer, slamfire, sparlyre, starfire, tripwire, unsquire, whitmire, wilshire

9 letters:
acrospire, adipocire, angelfire, archspire, back-fire, barkshire, berkshire, bipartire, blackfire, brockmire, brushfire, buteshire, catchfire, crossfire, fifeshire, freespire, frostwire, grandsire, grassfire, guidewire, hamsphire, hard-wire, hell-fire, high-wire, izaguirre, macintyre, mediafire, obermaier, quavemire, quickfire, rapidfire, reacquire, reinspire, retemeyer, retrofire, rightmire, rothmeier, scarefire, set afire, shellfire, spacewire, spellfire, stabilire, suttmeier, swingfire, ti-nspire, tietmeyer, tightwire, underwire, watchfire, wiltshire

10 letters:
banffshire, blackshire, centerfire, chat-shire, consentire, dannemeyer, darbyshire, devonshire, dissentire, flintshire, gardenhire, granophyre, lancashire, leptospire, morayshire, nairnshire, perthshire, prerequire, quick-fire, rapid-fire, ross-shire, settlemire, settlemyre, shropshire, stegemeier, stoudemire, untermeyer

11 letters:
argyllshire, barbed-wire, biedermeier, boysetsfire, center-fire, counterfire, dorsetshire, fly-by-wire, forfarshire, kastenmeier, lamprophyre, lanarkshire, radnorshire, stiegemeier, stoudenmire, tinkershire

12 letters:
apple-squire, berwickshire, denbighshire, jurgensmeyer, peeblesshire, renfrewshire, selkirkshire, warwickshire, white squire, wigtownshire

13 letters:
aberdeenshire, brake-by-wire, cardiganshire, drew mcintyre, dumfriesshire, globenewswire, harry maguire, jerry maguire, monmouthshire, pembrokeshire, richmondshire, roxburghshire, somersetshire, stirlingshire

14 letters:
brecknockshire, cambridgeshire, glamorganshire, merionethshire, pneumatic tyre

15 letters:
buckinghamshire, caernarfonshire, caernarvonshire, carmarthenshire, huntingdonshire, inverness-shire, kincardineshire, linlithgowshire, melanie mcguire, nottinghamshire

16 letters:
agm-114 hellfire, clackmannanshire

1 letter:
r

2 letters:
ar, or, er, r.

3 letters:
bur, mir, for, jar, npr, air, par, fur, mar, war, err, far, oar, ore, gar, ear, car, ayr, tor, sir, are, cur, nor, bar, tar, per, fir

4 letters:
deer, bear, pare, lore, more, sour, slur, dare, poor, lour, gore, torr, rear, door, wear, weir, bore, fair, year, amir, boer, veer, were, spar, gear, boar, hare, lear, core, hour, star, lair, boor, near, sore, tier, sure, mare, jeer, yore, pair, wore, pore, soar, moor, hair, sear, cure, fare, four, herr, doer, fear, fore, tear, carr, scar, your, bier, parr, care, burr, czar, pour, rare, dour, bare, tsar, blur, birr, tore, hear, sere, ware, beer, char, spur, emir, dear, pure, ruhr, hoar, seer, lure, mere, thor, purr, heir, pear, peer, stir, here, tour, roar, barr, adar, pier, abor, fahr, fehr, gere, igor, jour, lohr, voir

5 letters:
khmer, score, loire, aware, blair, moore, assur, barre, whore, crore, churr, queer, snore, glare, blare, ameer, sitar, drear, ne'er, qatar, whirr, flair, chore, scour, defer, cheer, flare, store, amour, spore, dower, senor, demur, steer, safar, corps, share, shirr, babar, stair, unbar, we're, there, snare, chirr, stare, inure, shore, floor, myrrh, spear, their, sneer, inter, shear, swear, adore, spare, dakar, abhor, incur, sheer, dinar, bazar, chair, flour, zaire, spoor, occur, refer, scare, blear, starr, clear, moire, infer, deter, smear, decor, murre, swore, recur, where, cigar, asarh, ashir, astir, athar, bihar, damar, debar, freyr, greer, grier, kotar, lamar, maher, sapir, selar, sherr, vanir, vidar, yasir

6 letters:
lekvar, appear, unfair, impure, secure, velour, impair, insure, guitar, drawer, career, confer, sphere, midair, ensure, affair, assure, square, immure, bazaar, adjure, galore, so far, pierre, vigour, endear, disbar, unsure, endure, ignore, beware, concur, rehear, repair, prayer, tumour, cohere, valour, severe, claire, prewar, detour, mature, go for, before, qintar, poseur, ashore, vapour, prefer, manure, you're, veneer, demure, revere, adhere, savour, voyeur, allure, by far, abjure, aflare, anshar, bonior, cottar, devoir, eclair, exmoor, fakeer, go far, inhere, isobar, jamjar, kaffir, lenore, lontar, menhir, nuphar, o'hare, pindar, rigour, salvor, sambar, sambur, schorr, secpar, shamir, shmear

7 letters:
ask for, austere, compere, verdure, hot air, big sur, myanmar, rapport, pasteur, hot war, pay for, compare, unclear, inshore, liqueur, premier, anymore, prepare, schmear, deplore, pioneer, they're, postwar, saviour, masseur, cashier, sincere, restore, bizarre, couture, ensnare, declare, compeer, au pair, danseur, succour, de jure, obscure, unaware, fervour, procure, explore, flavour, affaire, despair, wet bar, implore, astaire, besmear, bonaire, bonheur, bugbear, co-star, cooccur, cry for, flexure, forbear, gravure, guinier, hachure, houhere, kildeer, languor, minibar, moliere, nervure, not far, no more, nut bar, on tour, opt for, outroar, pry bar, rancour, run for, samovar, shophar, soilure, tangier, tarsier, tonsure, try for, tussore, tv star, upstair, up here, vitharr, wafture, who are, you are

8 letters:
brochure, grimoire, overhear, look for, call for, nightjar, sea star, polypore, reappear, brumaire, engineer, send for, reinsure, boer war, milk bar, seigneur, red deer, souvenir, what for, low gear, tank car, cavalier, offshore, due care, saboteur, mutineer, day care, frontier, wood tar, frotteur, dog star, lead ore, ant bear, grandeur, immature, fall for, domineer, pace car, frimaire, bell jar, open air, voltaire, roe deer, monsieur, care for, sea hare, coal tar, reassure, for sure, debonair, forswear, premiere, cash bar, done for, pine tar, transfer, sand bar, cold war, a. t. r., abampere, abattoir, allosaur, amanpour, axle bar, baccilar, barosaur, blue air, bog star, bus fare, c. p. r., cab fare, calm air, car care, car door, cat bear, coal car, coiffeur, coiffure, coinsure, date bar, derriere, elaphure, encolure, ex-mayor, f. d. r., feel for, fend for, footgear, footsure, gill bar, give ear, got your, grab bar, handwear, high bar, ice bear, iron ore, killdeer, lavalier, longueur, mail car, make for, markhoor, microbar, muleteer, open-air, outscore, overbear, p. c. r., paramour, parterre, peignoir, per year, put your, r. j. r., race car, scimitar, sinecure, slop jar, sun gear, t-square, take for, tamanoir, testiere, thus far, true fir, twoscore, v. c. r., voussoir, what are, wheatear, wirehair

9 letters:
balladeer, guarantor, leap year, buccaneer, blue star, rock star, puppeteer, fire door, candy bar, light air, stock car, bock beer, life peer, superstar, great war, price war, chevalier, snack bar, raconteur, disappear, inner ear, speak for, joint fir, solitaire, squad car, mouse ear, next door, trap door, insincere, musketeer, all clear, back door, holy year, persevere, musk deer, salad bar, root beer, near beer, premature, gondolier, root hair, volunteer, world war, civil war, profiteer, color bar, spur gear, disrepair, pinch bar, cold sore, barn door, interfere, pap smear, space bar, stand for, cable car, take care, bandolier, racketeer, sightseer, chauffeur, financier, brigadier, au revoir, outer ear, mule deer, high gear, skin care, worm gear, film star, belvedere, make sure, wild boar, mason jar, open door, air corps, allow for, apatosaur, archosaur, bandoleer, basketeer, cabin car, cafe noir, cannoneer, cared-for, carob bar, chair car, chinaware, class war, come near, coon bear, cover for, dark beer, debonaire, downstair, draw near, duty tour, each year, fourscore, fruit bar, gadgeteer, gazetteer, giant fir, give care, go to war, grand fir, grope for, guinevere, gum myrrh, hadrosaur, hair care, half door, hekmatyar, held dear, hold dear, hoped-for, horsehair, in so far, kala-azar, make pure, megathere, metal bar, nothosaur, once more, over here, pistoleer, plump for, plunk for, presbyter, privateer, prowl car, pterosaur, pushchair, quest for, red scare, rest-cure, scout car, shoot for, side door, slice bar, sloganeer, sonneteer, sorry for, sport car, stall bar, stegosaur, stud mare, sushi bar, sweep oar, taxi fare, that your, there are, towel bar, trochlear, warrantor, wasteweir, where are, white fir

10 letters:
quadrature, answer for, small beer, great bear, buffet car, polar star, pinot noir, bombardier, flare star, first gear, honey bear, cookie jar, racing car, try square, chandelier, bumper car, charioteer, double bar, korean war, light year, liquid air, leyden jar, tidal bore, bevel gear, bath chair, north star, escritoire, commandeer, front door, louis d'or, lawn chair, black bear, pubic hair, dutch door, lunar year, middle ear, solar year, in the air, mal de mer, set square, dining car, polar bear, deck chair, side chair, foursquare, underscore, balsam fir, sports car, heavy spar, child care, heretofore, swing door, shop floor, trojan war, easy chair, petit four, movie star, patrol car, civil year, guard hair, brown bear, giant star, great year, silver fir, auctioneer, police car, stage door, fixed star, grand tour, estate car, wing chair, teddy bear, koala bear, mouse deer, parlor car, air-to-air, alpine fir, ankylosaur, baudelaire, bear's ear, belshazzar, birch beer, blackamoor, brontosaur, budget for, burro deer, called for, camp chair, carabineer, cattle car, ceratosaur, cockleburr, coffee bar, cross hair, debonnaire, embouchure, every year, faith cure, false hair, fraser fir, god of war, gondoliere, great care, ground fir, halberdier, harpooneer, ictodosaur, in one ear, jaunty car, kieselguhr, light beer, longed-for, looked-for, man-of-war, marsh hare, mens store, mouse hare, opera star, oregon fir, oyster bar, palace car, panda bear, peanut bar, pelycosaur, plesiosaur, polar hare, re-explore, river pear, scotch fir, scrutineer, secretaire, seismosaur, set ashore, shoe store, skunk bear, sloth bear, smoothbore, swamp hare, texas star, third gear, threescore, to be sure, to one ear, track star, train fare, tug-of-war, uintathere, water deer, weiss beer, wished-for, woody pear

11 letters:
freight car, baggage car, saddle sore, apgar score, word square, bronx cheer, binary star, kodiak bear, trolley car, pamphleteer, fallow deer, crimean war, uncared-for, gondola car, billionaire, school year, woolly bear, spruce beer, ginger beer, litterateur, doctrinaire, dental care, first floor, dance floor, sedan chair, millionaire, little bear, solar flare, edward lear, connoisseur, candy store, love affair, silver star, peace corps, common year, bronze star, arctic char, rectilinear, limited war, screen door, ichthyosaur, account for, health care, vanity fair, interlinear, douglas fir, balsam pear, mexican war, potty chair, basket star, double star, vietnam war, fiscal year, french door, flying mare, six day war, touring car, apricot bar, arctic hare, beach chair, black maire, buffalo bur, camera care, candidature, church year, come before, come in for, compact car, corythosaur, cry out for, death chair, double door, dressed ore, dromaeosaur, dyaus-pitar, gala affair, golden star, gomphothere, granola bar, hershey bar, iraqi dinar, liquidambar, looking for, lowland fir, milliampere, mineral tar, munich beer, native bear, native pear, ocean floor, parlour car, peacock ore, planet gear, prepare for, press corps, provide for, puff of air, pullman car, railway car, ripping bar, rotogravure, schenk beer, seckel pear, second gear, slight care, smoking car, spanish war, squeeze for, stable gear, styracosaur, subway fare, supersedure, syrian bear, take a dare, that you're, tyrannosaur, ulaanbaatar, unhoped-for, uranium ore, volt-ampere, walk on air, what's your, what you're, white maire, wicket door, yacht chair, yearned-for

12 letters:
morris chair, evening star, sleeping car, barking deer, bill of fare, morning star, blazing star, wrecking bar, camel's hair, ground floor, magic square, folding door, landing gear, feather star, state of war, grizzly bear, internal ear, iceland spar, entrepreneur, belgian hare, times square, bevel square, external ear, neutron star, prickly pear, sloop of war, steel guitar, brittle star, kuala lumpur, marine corps, elephant ear, liquor store, anchovy pear, swivel chair, avocado pear, green manure, latin square, restaurateur, soup du jour, aide-memoire, barber chair, bartle frere, buffer store, ceramic ware, colorado fir, electric car, elevator car, far and near, fishing gear, flower store, garden chair, going ashore, head of hair, heliogravure, hitching bar, in disrepair, king's spear, leisure wear, libyan dinar, lounge chair, marston moor, medical care, nursing care, outside door, photogravure, pied-a-terre, powder store, prairie star, psittacosaur, railroad car, retail store, savoir-faire, sensory hair, serpent star, service door, sliding door, standing for, staurikosaur, that you are, time of year, uncalled-for, unlooked-for, unwished-for, varying hare, vina del mar, what is more, without fear, yemeni dinar

13 letters:
virginia deer, nom de guerre, lord's prayer, wear and tear, laissez faire, multiple star, snowshoe hare, calendar year, louis pasteur, questionnaire, haute couture, academic year, passenger car, steering gear, crystal clear, rocking chair, general store, cinnamon bear, package store, force majeure, conventioneer, rouge et noir, variable star, shooting star, tropical year, windsor chair, grocery store, and there are, army engineer, bahrain dinar, bartlett pear, bowling score, bring to bear, carte du jour, chocolate bar, conservatoire, cote d'ivoire, country store, devil's cigar, european hare, exterior door, feeding chair, folding chair, hospital care, interior door, iranian dinar, japanese deer, jewelry store, kangaroo bear, kangaroo hare, kuwaiti dinar, laissez-faire, last frontier, market square, more and more, musical score, operatic star, ordinary care, oriental sore, parquet floor, platonic year, porte-cochere, porter's beer, public square, social affair, stinging hair, swinging door, tropical sore, woodland star

14 letters:
evening prayer, financial year, civil engineer, planetary gear, alligator pear, hardware store, concessionaire, discount store, morning prayer, cervical smear, compressed air, horizontal bar, walking on air, electric chair, accordion door, algerian dinar, baseball score, christian year, christmas star, clothing store, coffee liqueur, commissionaire, computer store, elephant's ear, football score, greenland spar, hold still for, know the score, legal transfer, naval engineer, nonsmoking car, orange liqueur, red dwarf star, red silver fir, straight chair, surface-to-air, take the floor, tunisian dinar, warning of war, war to end war, whitetail deer, white lead ore, world premiere, yom kippur war

15 letters:
hawaiian guitar, croix de guerre, first world war, cauliflower ear, sabbatical year, black marketeer, acoustic guitar, flight engineer, prisoner of war, esprit de corps, electric guitar, reasonable care, captain's chair, earthenware jar, have been there, house of prayer, jewish new year, jordanian dinar, kilovolt-ampere, marine engineer, mezzanine floor, mining engineer, out of thin air, reclining chair, responsible for, santa lucia fir, specialty store, television star, us marine corps, with great care

16 letters:
second world war, celestial sphere, department store, diplomatic corps, basketball score, capital of qatar, capital of zaire, come to the fore, highway engineer, on a lower floor, pachycephalosaur, pays de la loire, persian gulf war, political sphere, refrigerator car, secretary of war, seven years' war, step to the fore, white dwarf star

17 letters:
astronomical year, differential gear, thirty years' war, convenience store, peloponnesian war, castle in the air, brace oneself for, earning per share, english civil war, green douglas fir, implements of war, little chief hare, lowland white fir, military engineer, on a higher floor, overstuffed chair, pere david's deer, railroad engineer, software engineer, yugoslavian dinar

18 letters:
hundred years' war, american civil war, aerospace engineer, alaskan brown bear, carpenter's square, dense blazing star, haberdashery store, military volunteer, pacific silver fir, russo-japanese war, tender loving care

19 letters:
mechanical engineer, electrical engineer, american black bear, automotive engineer, efficiency engineer, elasticity of shear, european silver fir, franco-prussian war

20 letters:
california white fir, pinion and ring gear, vestibule of the ear

21 letters:
delusions of grandeur, book of common prayer, aeronautical engineer, building supply store, french and indian war, inspection and repair, southern yemeni dinar

22 letters:
battle of marston moor, metallurgical engineer, privilege of the floor

31 letters:
reserve officers training corps