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

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

4 syllables:
adelaster, alabaster, amphiaster, boroughmaster, burghermaster, burgomaster, choirmaster, concert-master, concertmaster, countercaster, criticaster, dancing-master, ghettoblaster, harbormaster, harbourmaster, ironmaster, judomaster, medicaster, mesogaster, myocastor, oleaster, overmaster, puppetmaster, puzzlemaster, quartermaster, rebroadcaster, sambomaster, servicemaster, singing-master, snallygaster, stationmaster, sticking-plaster, stratocaster, supertaster, telecaster, ticketmaster, undermaster, watermaster, weathercaster, witticaster

5 syllables:
dvdisaster, grammaticaster, interpilaster, politicaster, solenogaster, verticillaster

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

3 syllables:
thereafter, hereafter

4 syllables:
madagascar, basseterre, hereinafter