5 letters:
balor, calor, falor, halar, salar, salir, talor, valer, valor

6 letters:
fallar, galere, paller, pallor, valeur

7 letters:
ballare, chaleur, dialler, moraler

8 letters:
avsallar, caballer, canaller, detallar

9 letters:
acorralar

11 letters:
broomballer

13 letters:
knuckleballer

2 letters:
ar, er

3 letters:
bur, mir, jar, npr, air, par, fur, mar, err, far, gar, ear, car, ayr, sir, are, ire, cur, bar, tar, per, fir

4 letters:
deer, bear, pare, sour, slur, dare, poor, lour, rear, wear, weir, fair, year, tyre, amir, dire, veer, were, spar, gear, hire, hare, lear, hour, star, lair, boor, near, tier, sure, mare, jeer, pair, moor, hair, sear, meir, cure, fare, herr, doer, fear, tear, carr, scar, bier, parr, care, burr, fire, czar, wire, rare, dour, bare, tsar, blur, birr, lyre, hear, sere, ware, mire, beer, char, spur, emir, dear, pure, ruhr, seer, lure, mere, purr, heir, pear, peer, stir, here, tour, barr, adar, pier

5 letters:
khmer, loire, aware, blair, assur, barre, churr, queer, skier, glare, blare, ameer, sitar, drear, ne'er, qatar, whirr, flair, scour, defer, cheer, flare, afire, amour, dower, demur, steer, safar, share, shirr, babar, stair, unbar, we're, there, snare, chirr, stare, inure, myrrh, spear, their, sneer, inter, quire, shear, swear, spare, dakar, incur, shire, sheer, dinar, bazar, chair, flour, zaire, spoor, occur, refer, scare, blear, starr, clear, moire, infer, deter, spire, smear, murre, recur, where, cigar

6 letters:
lekvar, appear, unfair, impure, secure, velour, impair, insure, guitar, career, confer, sphere, midair, ensure, affair, assure, square, immure, bazaar, aspire, adjure, so far, pierre, endear, disbar, unsure, endure, squire, retire, beware, concur, rehear, repair, prayer, cohere, severe, claire, detour, mature, qintar, poseur, vapour, prefer, manure, you're, veneer, demure, revere, adhere, savour, voyeur, allure, admire, by far, expire

7 letters:
austere, compere, verdure, hot air, big sur, myanmar, respire, pasteur, compare, unclear, liqueur, premier, prepare, schmear, require, pioneer, they're, inquire, saviour, masseur, cashier, inspire, sincere, bizarre, couture, ensnare, declare, compeer, au pair, danseur, succour, de jure, obscure, unaware, fervour, procure, flavour, affaire, despair, wet bar

8 letters:
brochure, grimoire, overhear, nightjar, sea star, reappear, brumaire, engineer, reinsure, milk bar, seigneur, red deer, souvenir, low gear, tank car, cavalier, due care, saboteur, mutineer, day care, frontier, wood tar, frotteur, dog star, ant bear, grandeur, immature, domineer, pace car, frimaire, bell jar, open air, voltaire, roe deer, monsieur, sea hare, coal tar, reassure, for sure, debonair, forswear, premiere, cash bar, perspire, pine tar, transfer, sand bar

9 letters:
balladeer, leap year, buccaneer, blue star, rock star, puppeteer, candy bar, light air, stock car, bock beer, life peer, superstar, chevalier, snack bar, raconteur, disappear, inner ear, joint fir, solitaire, squad car, mouse ear, insincere, musketeer, all clear, holy year, persevere, musk deer, salad bar, root beer, near beer, premature, gondolier, root hair, volunteer, profiteer, color bar, spur gear, disrepair, pinch bar, interfere, pap smear, space bar, 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, mason jar

10 letters:
quadrature, 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, light year, liquid air, leyden jar, bevel gear, bath chair, north star, escritoire, commandeer, lawn chair, black bear, pubic hair, lunar year, middle ear, solar year, in the air, mal de mer, set square, dining car, polar bear, deck chair, side chair, foursquare, balsam fir, sports car, heavy spar, child care, easy chair, movie star, patrol car, civil year, guard hair, brown bear, giant star, great year, silver fir, auctioneer, police car, fixed star, grand tour, estate car, wing chair, teddy bear, mouse deer, koala bear, parlor car

11 letters:
freight car, baggage car, word square, bronx cheer, binary star, kodiak bear, trolley car, pamphleteer, fallow deer, gondola car, billionaire, school year, woolly bear, spruce beer, ginger beer, litterateur, doctrinaire, dental care, sedan chair, millionaire, little bear, solar flare, edward lear, connoisseur, love affair, silver star, common year, bronze star, arctic char, rectilinear, health care, vanity fair, interlinear, douglas fir, balsam pear, potty chair, basket star, double star, fiscal year, flying mare, touring car

12 letters:
morris chair, evening star, sleeping car, barking deer, bill of fare, morning star, blazing star, wrecking bar, camel's hair, magic square, landing gear, feather star, grizzly bear, internal ear, iceland spar, entrepreneur, belgian hare, times square, white squire, bevel square, external ear, neutron star, prickly pear, steel guitar, brittle star, kuala lumpur, elephant ear, anchovy pear, swivel chair, avocado pear, green manure, latin square, restaurateur, soup du jour

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, cinnamon bear, force majeure, conventioneer, rouge et noir, variable star, shooting star, tropical year, windsor chair

14 letters:
evening prayer, financial year, civil engineer, planetary gear, alligator pear, concessionaire, morning prayer, cervical smear, compressed air, horizontal bar, walking on air, electric chair

15 letters:
hawaiian guitar, croix de guerre, cauliflower ear, sabbatical year, black marketeer, acoustic guitar, flight engineer, electric guitar, reasonable care

16 letters:
celestial sphere

17 letters:
astronomical year, differential gear, castle in the air

19 letters:
mechanical engineer, electrical engineer

21 letters:
delusions of grandeur, book of common prayer