2 syllables:
besar, besor, besser, blesser, bless her, bresser, cesser, cessor, chesser, dresser, dresseur, esser, fesser, fresser, gresser, guesser, hesser, jesser, jessore, kesar, kresser, leser, lesser, lessor, loesser, messer, messr, nesser, pesar, plessor, presser, pressor, press her, schlesser, sesar, sesser, specer, stressor, tessar, tresser, vesser, yes sir

3 syllables:
abaisser, accessor, addresser, addressor, adresser, aggressor, agresser, agresseur, agressor, assesseur, assessor, beckmesser, bergstresser, caresser, caress her, co-lessor, compresser, compressor, confesar, confesser, confesseur, confessor, cross-dresser, depressor, digresser, egressor, expresser, express her, fluorescer, hairdresser, impresser, impressor, impress her, insessor, kolesar, kompressor, landmesser, lopressor, manesar, obsessor, oppressor, possessor, precessor, processor, prof., profesor, professeur, professor, professore, progresar, redresser, redressor, regressor, relessor, represser, repressor, sublessor, successeur, successor, suppresser, suppressor, thanesar, transgressor, undress her

4 syllables:
abastecer, aborrecer, acquiescer, air compressor, antecessor, apetecer, buttermesser, co-assessor, co-processor, coalescer, corepressor, decompressor, dispossessor, food processor, full professor, intercessor, predecessor, prepossessor, repossessor, second-guesser, spike suppressor, surge suppressor, tax assessor, vasopressor, vinedresser, window-dresser, window dresser, word processor

5 syllables:
central processor, data processor, english professor, moto-compressor, multi-processor, multiprocessor, underpossessor, uniprocessor, vasodepressor

6 syllables:
assistant professor, homo antecessor, immunosuppressor, multi-core processor, visiting professor

7 syllables:
associate professor

2 syllables:
breather, neither, beaver, cleaver, either, griever, lever, greaser, leisure, fever, seizure, ether, leaver, reefer, heaver, weaver, seashore, aesir, aether, blether, chevre, clever, ever, feather, fresher, heather, heifer, leather, measure, nether, never, pleasure, pressure, sever, tether, tevere, thresher, treasure, trevor, weather, wether, whether, zephyr

3 syllables:
brain fever, q fever, deceiver, receiver, buck fever, swamp fever, retriever, hay fever, tick fever, achiever, reliever, trench fever, dengue fever, believer, conceiver, perceiver, air pressure, at leisure, bad weather, beach heather, bell heather, blood pressure, board measure, carrefour, cold weather, crushed leather, displeasure, dry measure, endeavor, endeavour, fair weather, false heather, flight feather, foot lever, forever, gayfeather, good weather, guenevere, high-pressure, high pressure, hot weather, however, long measure, low pressure, oil pressure, ooze leather, quill feather, raw weather, refresher, scots heather, sea feather, shoe leather, sound pressure, square measure, tape measure, together, wash leather, whatever, whenever, wherever, whichever, white feather, white heather, white leather, whit leather, whoever, whomever, yard measure

4 syllables:
unbeliever, ethyl ether, parrot fever, scarlet fever, splenic fever, dandy fever, mountain beaver, valley fever, misbeliever, deer fly fever, yellow fever, texas fever, mountain fever, typhoid fever, malta fever, typhus fever, rabbit fever, disbeliever, eager beaver, shipping fever, spotted fever, acupressure, add together, all together, altogether, band together, bring together, bunch together, cantilever, clap together, close together, come together, common measure, compound lever, contour feather, crowd together, cubic measure, desperate measure, draw together, fudge together, get together, golden heather, gold of pleasure, hang together, high blood pressure, lash together, league together, liquid measure, live-forever, pack together, patent leather, piece of leather, princess feather, pull together, purple heather, put together, russia leather, saddle feather, sew together, sickle feather, slap together, stay together, stick together, throw together, vapor pressure, whatsoever

5 syllables:
golden retriever, relapsing fever, rheumatic fever, glandular fever, recurrent fever, calling together, circular measure, cobble together, coming together, compartment pressure, defensive measure, huddle together, lady of pleasure, linear measure, living together, osmotic pressure, primary feather, sexual pleasure, withersoever

6 syllables:
satellite receiver, epileptic seizure, hemorrhagic fever, labrador retriever, arterial pressure, atmospheric pressure, barometric pressure, brewer's mountain heather, bringing close together, capacity measure, diastolic pressure, imitation leather, information measure, in the altogether, radiation pressure

7 syllables:
chesapeake bay retriever

8 syllables:
rocky mountain spotted fever, mediterranean fever, instantaneous sound pressure

9 syllables:
acoustic radiation pressure