2 syllables:
-aster, -master, aster, astor, astur, bastar, baster, blaster, caster, castor, cast her, craster, dastar, dastur, drmaster, faster, gaster, haster, hastur, jaster, kaster, kastor, laster, lastre, master, mastor, passed her, paster, pastor, past her, pasztor, pflaster, plaster, raster, sastre, shaster, vaster

3 syllables:
albastar, ancaster, bandmaster, bargemastter, barmaster, beachmaster, beach aster, beastmaster, beemaster, beplaster, bergmaster, bog aster, botmaster, brewmaster, broadcaster, buckmaster, burghmaster, burgmaster, bushmaster, cadaster, canaster, chargemaster, chessmaster, cluemaster, cockmaster, contraster, court-plaster, court plaster, craftsmaster, diaster, divemaster, dockmaster, doncaster, drillmaster, drill master, emplaster, fightmaster, firemaster, flamemaster, forecaster, gamemaster, games-master, gamesmaster, gangmaster, goodpaster, grandmaster, grassmaster, hackmaster, headmaster, heath aster, hoffmaster, housemaster, huffmaster, ink master, jazzmaster, jewelmaster, jumpmaster, lancaster, landmaster, linecaster, loadmaster, lockmaster, macmaster, mcmaster, micraster, mint-master, mixmaster, netcaster, newscaster, nightcaster, old master, past master, paymaster, piaster, pilaster, pineaster, podcaster, postmaster, quizmaster, rangemaster, remaster, ringmaster, roadmaster, rolemaster, roughcaster, rush aster, sandblaster, saymaster, schoolmaster, scoutmaster, sea aster, sheepmaster, shinplaster, shipmaster, slavemaster, smooth aster, solaster, spellcaster, sperm-aster, sportscaster, sportsmaster, spymaster, stainmaster, stairmaster, starved aster, stiff aster, stylaster, surfcaster, tadcaster, taskmaster, thrustmaster, toastmaster, trackmaster, trainmaster, two-master, unpastor, view-master, warmaster, waycaster, webcaster, webmaster, weighmaster, wharfmaster, wheremaster, whoremaster, wood aster, workmaster, wreck-master, yachtmaster, yardmaster

4 syllables:
adelaster, alabaster, amphiaster, ari aster, azure aster, boroughmaster, burghermaster, burgomaster, bushy aster, china aster, choirmaster, concert-master, concertmaster, countercaster, criticaster, dancing-master, genus aster, genus castor, ghettoblaster, golden aster, harbormaster, harbourmaster, ironmaster, james acaster, jim buckmaster, judomaster, lath and plaster, medicaster, mesogaster, mustard plaster, myocastor, new york aster, oleaster, overmaster, prairie aster, puppetmaster, puzzlemaster, quartermaster, question master, rebroadcaster, riding master, sailing master, sambomaster, servicemaster, singing-master, small white aster, snallygaster, southern aster, stationmaster, sticking-plaster, sticking plaster, sticky aster, stratocaster, supertaster, telecaster, ticketmaster, undermaster, watermaster, weathercaster, white wood aster, willow aster, witticaster

5 syllables:
adhesive plaster, avro lancaster, calico aster, cornflower aster, dvdisaster, goldilocks aster, grammaticaster, henry mcmaster, house of lancaster, interpilaster, late purple aster, mojave aster, new england aster, politicaster, property master, rattlesnake master, solenogaster, tansy leaf aster, upland white aster, verticillaster, weather forecaster, white prairie aster

6 syllables:
aromatic aster, city of lancaster, hairy golden aster, paco cabanes pastor, prairie golden aster

7 syllables:
eastern silvery aster, maryland golden aster, television newscaster, western silvery aster

8 syllables:
oriental alabaster, perennial salt marsh aster

2 syllables:
laughter, lascar, after, drafter, caspar, rafter, casper, asker, jasper, asper, crafter

3 syllables:
sought after, take after, look after, thereafter, go after, hereafter, be after, chase after, come after, lech after, lust after, point after, quest after

4 syllables:
madagascar, basseterre, hereinafter