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, stressor, tessar, tresor, 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:
neither, beaver, either, lever, seizure, freezer, griever, squeezer, teaser, cleaver, tweezer, seashore, leisure, caesar, ether, heaver, weaver, breather, geezer, fever, leaver, reefer

3 syllables:
brain fever, buck fever, reliever, dengue fever, believer, perceiver, swamp fever, hay fever, tick fever, conceiver, deceiver, receiver, q fever, retriever, achiever, appeaser, trench fever

4 syllables:
julius caesar, mountain beaver, misbeliever, malta fever, unbeliever, valley fever, mountain fever, typhoid fever, shipping fever, rabbit fever, disbeliever, eager beaver, ethyl ether, parrot fever, splenic fever, spotted fever, scarlet fever, deer fly fever, yellow fever, texas fever, typhus fever, dandy fever

5 syllables:
glandular fever, recurrent fever, rheumatic fever, golden retriever, relapsing fever

6 syllables:
labrador retriever, hemorrhagic fever, satellite receiver, epileptic seizure

7 syllables:
chesapeake bay retriever

8 syllables:
rocky mountain spotted fever, mediterranean fever