2 syllables:
beiter, biter, blighter, brighter, citer, deiter, dighter, eiter, fighter, flighter, heiter, kiter, knitr, kreiter, leiter, lyter, miter, mitre, nighter, niter, pitre, plighter, reiter, reitter, righter, riter, ruyter, schneiter, schreiter, seiter, seitter, sighter, slighter, sluyter, slyter, smiter, tighter, titer, titre, triter, weiter, whiter, writer, zeiter

3 syllables:
affrighter, al-fitr, all-nighter, backbiter, begleiter, blassreiter, blastfighter, blockleiter, braillewriter, bullfighter, bushfighter, chapitre, checkwriter, chiwriter, clayfighter, cockfighter, cowriter, crime-fighter, delighter, dogfighter, downlighter, ex-fighter, excitar, exciter, firefighter, firelighter, first-nighter, gagwriter, gauleiter, ghost-writer, ghostwriter, gunfighter, highlighter, igniter, incitar, inciter, indicter, inditer, infighter, inviter, jetfighter, kicklighter, lamplighter, midnighter, moonlighter, news-writer, newswriter, pit-fighter, playwriter, prize-fighter, prizefighter, reciter, reichsleiter, requiter, rewriter, scorewriter, screenwriter, scriptwriter, signwriter, skywriter, songwriter, speechwriter, sportswriter, starfighter, streetfighter, sunfighter, surfeiter, sweetnighter, telewriter, typewriter, uplighter, warfighter, wheelwriter

4 syllables:
copyrighter, copywriter, displaywriter, dynamiter, eid-ul-fitr, engeleiter, eurofighter, expediter, flugbegleiter, fly-by-nighter, imagewriter, laserwriter, overnighter, story-writer, storywriter, underwriter

5 syllables:
abteilungsleiter, codeigniter, singer-songwriter, teletypewriter

2 syllables:
sniper, striker, slider, wiper, striper, cyder, scriber, tiger, fibre, fiber, geiger, eider, piper, glider, cider, tiber, viper, hiker, rider, cyber, spider, highchair, diaper, wider, ryder, liger, hyper, briber, gaidar, gidar, ichor, maiger, schneider, snyder, stridor, weicker

3 syllables:
insider, subscriber, collider, provider, outsider, divider, imbiber, east-sider, west-sider

4 syllables:
neofiber

5 syllables:
supercollider