1 syllable:
ares, baars, bar's, barr's, barres, barrs, bars, barz, car's, carr's, carrs, cars, cars', charrs, chars, czar's, czars, far's, gars, gnars, guars, haars, jaars, jars, jmaars, jstars, kaars, kahr's, kahrs, laars, lars, lcars, maars, marres, marrs, mars, mars', marz, mg cars, nars, ours, paars, par's, parrs, pars, quarz, r's, r.'s, r.s, sars, scars, spars, staar's, star's, starr's, starrs, stars, stars', starz, star wrs, tahrs, thars, thouars, vars, z-cars

2 syllables:
abars, adars, afars, aldars, all-stars, alvars, amar's, amarres, asars, astars, azhar's, babar's, baibars, balkars, bazaars, bazars, beastars, blazars, boxcars, busbars, chukars, cigars, cigars', cottars, crossbars, crowbars, darkstars, deathstars, debars, denars, devoirs, dinars, disbars, durbars, dzhokhar's, feldspars, fiars, gaidar's, guitars, handcars, hectares, instars, ipars, jabar's, jaguar's, jaguars, jumars, lamar's, lamars, lazars, loadstars, lodestars, magyars, malars, melkar's, memoires, memoirs, minstar's, miroirs, mizar's, myanmar's, nightjars, northstar's, opars, pan-starrs, peignoirs, pieds-noirs, pop/stars, popstars, prankstars, prostars, qintars, racecars, radars, railcars, rebars, renoirs, sambars, sandbars, seskar's, shahar's, shofars, sidebars, sitars, sizars, sonars, streetcars, tbars, techstars, tigar's, tokars, toolbars, tramcars, trocars, unbars, velars, voussoirs, windstar's

3 syllables:
abattoirs, aerostar's, aerostars, alcazars, alpinestars, autocars, avatars, bryanstars, caviares, caviars, cinnabars, cojimar's, counting cars, escobar's, golden stars, handle-bars, handlebars, hekmatyar's, humsafars, isobars, jaguar cars, kosovars, lotus cars, malabars, megastars, metrostars, millibars, minibars, minicars, morningstar's, motorcars, nayanars, npr's, pokerstars, protostars, registrars, reservoirs, ricercars, samovars, seminars, sidecars, stars and bars, supercars, superstars, volvo cars, xchocobars

4 syllables:
almogavars, almucantars, parallel bars, put behind bars

5 syllables:
antimacassars, list of largest stars, nebuchadnezzars, rolls-royce motor cars, teleseminars

6 syllables:
afi's 100 years...100 stars, human mission to mars, rupaul's drag race all stars, the fault in our stars, thirty seconds to mars

7 syllables:
list of proper names of stars

1 syllable:
airs, bears, beers, cares, chairs, cheers, chores, clears, corps, cures, doors, drawers, ears, ers, fares, fears, fires, floors, fours, furze, gears, gerres, gore's, hairs, hears, heirs, here's, hers, hires, hours, pairs, peers, poor's, prayers, scares, scores, sears, shares, shears, shores, slurs, smears, squares, stairs, stores, tears, theirs, there's, tours, war's, wares, wars, wears, where's, wires, year's, years, years', yours

2 syllables:
affairs, algiers, all fours, appears, azores, careers, compares, declares, downstairs, explores, frontiers, ignores, inspires, job's tears, least squares, new year's, occurs, outdoors, pig's ears, prefers, prepares, raptores, refers, repairs, requires, small stores, tangiers, transfers, upstairs, velours, weltschmerz

3 syllables:
piciformes, strigiformes, baby's tears, baby tears, balkan wars, charge d'affaires, chest of drawers, common shares, disappears, down the stairs, engineers, flight of stairs, helicteres, intra vires, in arrears, in both ears, kick downstairs, kick upstairs, millionaires, out-of-doors, out of doors, pinnotheres, pioneers, preferred shares, pruning shears, punic wars, put on airs, questionnaires, rabbit ears, souvenirs, to both ears, ultra vires, unawares, underscores, up the stairs, volunteers, world affairs

4 syllables:
cypriniformes, particulars, authorized shares, entrepreneurs, man of affairs, musical chairs, preference shares, sincerely yours, state of affairs, treasury shares

5 syllables:
anterior nares, elegant cat's ears, method of least squares, music of the spheres, ordinary shares, posterior nares, wet behind the ears

6 syllables:
napoleonic wars

7 syllables:
international affairs, master in public affairs, veterans of foreign wars

9 syllables:
department of veterans affairs

10 syllables:
secretary of veterans affairs