2 syllables:
deafer, epher, ephor, feffer, geffre, hepher, jeffer, keffer, kefir, peffer, pfeffer, schaeffer, scheffer, sefer, shaeffer, sheffer, treffer, trefor, xephyr, zephyr, bifer, cipher, cypher, eifer, feifer, fifer, heiffer, kifer, knifer, leifer, lifer, peifer, peiffer, pfeifer, pfeiffer, phifer, pifer, reifer, rifer, schleifer, seifer, sifre, slifer

3 syllables:
cross-refer, djedefre, gath-hepher, jac schaeffer, antifur, chlamyphore, conchifer, cs-cipher, decipher, encipher, stonecipher, stonesifer, uncipher, wildlifer

4 syllables:
gittah-hepher, hasenpfeffer, lincoln-zephyr, chaocipher, playfair cipher

2 syllables:
neither, slicer, cicer, lesser, either, geyser, lever, diver, riser, heather, nether, never, vizor, leather, lessor, thresher, deicer, nicer, pleasure, clever, fresher, visor, treasure, aesir, devoir, ever, kaiser, aether, weather, feather, blether, measure, wether, leisure, splicer, seizer, fiver, tether, wiser, pressure, dresser, eyesore, driver, sever, miser, whether, blither, isere, schweitzer, striver, vithar, chevre, tevere, trevor

3 syllables:
deviser, pile driver, together, high pressure, fair weather, square measure, promisor, divisor, ooze leather, air pressure, depressor, professor, whoever, transgressor, flight feather, incisor, bell heather, whenever, dissever, endeavor, sea feather, oppressor, slave driver, board measure, at leisure, cold weather, possessor, pearl diver, dry measure, whatever, reviser, assessor, white feather, displeasure, endeavour, adviser, aggressor, refresher, forever, whichever, suppressor, arriver, sound pressure, advisor, successor, blood pressure, compressor, low pressure, confessor, wherever, tape measure, however, sun visor, whomever, survivor, bus driver, contriver, mule driver, stake driver, tank driver, truck driver, bad weather, beach heather, carrefour, crushed leather, false heather, foot lever, gayfeather, good weather, guenevere, high-pressure, hot weather, long measure, lopressor, oil pressure, quill feather, raw weather, scots heather, shoe leather, suppresser, wash leather, white heather, white leather, whit leather, yard measure

4 syllables:
come together, all together, whatsoever, put together, vapor pressure, device driver, altogether, cubic measure, full professor, liquid measure, russia leather, hang together, throw together, patent leather, pull together, band together, engine driver, scuba diver, common measure, high blood pressure, air compressor, window dresser, contour feather, get together, analyser, backseat driver, breathalyser, acupressure, add together, bring together, bunch together, cantilever, clap together, close together, compound lever, crowd together, desperate measure, draw together, fudge together, golden heather, gold of pleasure, lash together, league together, live-forever, pack together, piece of leather, princess feather, purple heather, saddle feather, sew together, sickle feather, slap together, spike suppressor, stay together, stick together, surge suppressor, tax assessor

5 syllables:
osmotic pressure, common divisor, linear measure, shipwreck survivor, calling together, circular measure, cobble together, coming together, compartment pressure, defensive measure, english professor, huddle together, lady of pleasure, living together, primary feather, sexual pleasure, withersoever

6 syllables:
barometric pressure, visiting professor, investment adviser, arterial pressure, assistant professor, diastolic pressure, radiation pressure, designated driver, atmospheric pressure, investment advisor, underwater diver, brewer's mountain heather, bringing close together, capacity measure, imitation leather, information measure, in the altogether

7 syllables:
associate professor

8 syllables:
instantaneous sound pressure

9 syllables:
acoustic radiation pressure