3 syllables:
-ology, college he, knowledge he, myology, ology, pnology

4 syllables:
acology, acrology, aerology, agrology, algology, andrologie, andrology, anthologie, anthology, apologie, apology, archology, arcology, arthrology, astrologie, astrology, atmology, autology, auxology, barology, batology, battology, beckology, biologie, biology, boxology, brontology, bryology, buddhology, bugology, cacology, carphology, carpology, cartology, cetology, chaology, chirology, chondrology, chorology, christology, chronologie, chronology, chrysology, clinology, codology, conchology, coprology, cosmologie, cosmology, cronology, cryptology, ctetology, cynology, cytology, demology, dendrology, desmology, dittology, djangology, dosology, doxology, duology, ecology, enology, ergology, ethnologie, ethnology, ethology, etmyology, euchology, fetology, foetology, fontology, fungology, g-technology, garbology, gastrology, gemmology, gemology, geologie, geology, ghostology, glossology, glottology, gnathology, gnomology, graphologie, graphology, haplology, hauntology, helcology, henology, herbology, hippology, histology, homology, hoplology, horology, hydrologie, hydrology, hygrology, hymnology, hypnology, ichnology, ichthyology, indology, kidology, killology, kinology, leptology, limnology, lithology, logology, lymphology, macrology, mammalogy, mammology, mantology, mastology, mazology, menology, metrology, micrology, misology, monology, morology, morphology, muscology, mycology, mythologie, mythology, naology, nasology, necrology, neology, nephology, nephrology, neurology, nomology, noology, nosology, nostology, oikology, ombrology, oncology, onology, ontologie, ontology, oology, orology, orthology, osmology, otology, ovology, paedology, pantology, pathologie, pathology, patrology, pedology, pelology, penology, petralogy, petrology, pharology, phenology, philologie, philology, phlebology, phonologie, photology, phrenology, phycology, phytology, pistology, planktology, plutology, pneumology, podology, pomology, posology, proctology, protology, psephology, pseudology, psilology, psychologie, psychology, psycology, punnology, pyrology, quinology, rabdology, realogy, recology, redology, rhabdology, rheology, rhinology, rumpology, runology, sarcology, scatology, seismology, serology, sexology, sinology, sitology, sonology, sophrology, spectrology, spermology, sphagnology, sphygmology, splanchnology, splenology, spongology, symbology, syndesmology, synology, tautology, technologie, technology, tecnology, tectology, tetralogy, tetrology, teuthology, thealogy, theology, thereology, thermology, therology, threpsology, tidology, tocology, tokology, topologie, topology, tribology, trichology, trophology, tropology, tsiology, turkology, typhlology, typology, typtology, urology, virology, vitalogy, wishology, xenology, xylology, zoologie, zoology, zymology

5 syllables:
acarology, actinology, acyrology, adenology, aetiology, agathology, agnotology, agriology, agrostology, aitiology, allergologie, allergology, anemology, angeiology, angelology, angiologie, angiology, anthropologie, anthropology, apiology, arachnology, archaeology, archeologie, archeology, areology, aretalogy, aretology, aristology, astacology, atheology, atomology, audiologie, audiology, autecology, auxanology, axiology, azoology, bacchanology, balneology, bibliology, bluesology, botanology, brachyology, bracketology, bromatology, caliology, campanology, carcinology, cardinology, cardiologie, cardiology, caricology, cariology, cephalology, cerebrology, cereology, cheirology, child psychology, chocolatology, choledology, choreology, chromatology, climatology, codicology, cohomology, collapsology, cometology, comixology, coniology, cosmetology, craniology, criminology, cristallology, croweology, curiology, dactylologie, dactylology, daemonologie, daemonology, deltiology, demonology, deontology, depth psychology, dermatologie, dermatology, diabology, dicaeology, dipterology, docimology, dosiology, dragonology, dysmorphology, eccrinology, edaphology, egyptology, electrology, embryologie, embryology, emetology, emmenology, enterology, entomologie, entomology, enzymology, eremology, erotology, erpetology, escapology, eschatology, ethymology, etimology, etiology, etymologie, etymology, fluviology, fossilology, futurology, galvanology, gelotology, genealogy, genecology, geneology, geratology, gerentology, gerontology, gigantology, glaciology, gnomonology, gnoseology, gnosiology, graminology, grammatology, greek mythology, gynaecology, gynecology, haematology, haemorheology, hagiology, heliology, helminthology, hematology, hemorheology, heortology, hepatology, herniology, herpetology, heterology, hexicology, hierology, high technology, histiology, hyetology, hygiology, hysterology, iatrology, iconology, ideologie, ideology, immunologie, immunology, implantology, insectology, irenology, iridology, japanology, jineology, karyology, koniology, kremlinology, kymatology, kyriology, laryngology, leprology, lexicology, lichenology, limacology, malacology, mariology, martyrology, mateology, meconology, melittology, membranology, mereology, methodology, miasmology, mineralogy, missiology, molinology, monadology, museology, musicology, myrmecology, narratology, nematology, neontology, neossology, neurotology, neurypnology, norse mythology, numerology, oceanology, odontology, oecology, oenology, olfactology, onychology, ophiology, ophthalmology, ophthamology, opthalmology, orchidology, organology, orismology, ornithology, oryctology, osteology, ourology, palaeology, paleethnology, paleology, palynology, pantheology, papyrology, parisology, paromology, perissology, phantasmology, pharmacology, pharyngology, phthisiology, physicology, physiologie, physiology, piphilology, piscatology, planetology, pneumatology, poenology, pogonology, polemology, politology, ponerology, potamology, praxeology, praxiology, primatology, promorphology, protistology, pteridology, pulmonology, pyretology, pyritology, radiology, rail technology, reflexology, rheumatology, ridgeology, roentgenology, scientology, scolecology, selenology, sematology, semeiology, semiology, sindonology, sitiology, skeletology, sociologie, sociology, somatology, sophiology, soziologie, spelaeology, speleology, statistology, stemmatology, stereology, stomatology, storiology, stromatology, sumerology, symptomology, synchronology, synecology, syphilology, tartarology, technicology, tegestology, telmatology, teratology, terminologie, terminology, termonology, thanatology, thaumatology, thermatology, thremmatology, tierpsychologie, timbrology, toxicology, toxinology, transtechnology, traumatology, uranology, urbanology, urinology, uronology, vaccinology, vermeology, vexillology, victimology, volcanology, vulcanology, zoophytology

6 syllables:
aedoeology, aerobiology, aerolithology, agnoiology, agrobiology, agroecology, agrotechnology, alethiology, amphibiology, anaplastology, anthrozoology, aphasiology, applied psychology, arbovirology, arteriology, arthropathology, assyriology, astrobiologie, astrobiology, astrogeology, astrolithology, astrotheology, atmospherology, autoecology, bacteriology, bio-technology, biocenology, bioecology, biopsychology, biotechnologie, biotechnology, cecidiology, characterology, chemoimmunology, chiropterology, christian theology, chronobiology, communicology, compound morphology, conchyliology, crustaceology, cryobiology, cryptovirology, cryptozoology, cyberpsychology, cytobiology, cytomorphology, cytopathology, cytotechnology, dactyliology, dendrochronology, diabetology, dialectology, diplomatology, dxc technology, dysteleology, ecclesiology, ecopsychology, ecotheology, encephalology, endemiology, endocrinologie, endocrinology, endodontology, english phonology, enigmatology, epiphytology, epistemology, epistomology, epizoology, esthematology, esthesiology, ethnobiology, ethnopsychology, exobiology, femtotechnology, folk etymology, geneaology, genesiology, genethlialogy, geobiology, geochronology, geohydrology, geomorphology, gestaltpsychologie, glottochronology, glycobiology, gnotobiology, gyrochronology, haemopathology, hamartiology, hemopathology, heresiology, hippopathology, histomorphology, histopathology, historiology, human ecology, hydrobiology, hydrogeology, hydrophytology, iamatology, ichnolithology, infotechnology, intertechnology, kinesiology, liturgiology, malariology, metapsychology, meteorologie, meteorology, micro-geology, microbiology, microecology, micromorphology, microtechnology, mining geology, morphophonology, nano-technology, nanotechnologie, neonatology, neuro-oncology, neuro-otology, neurobiology, neurohistology, neuropathology, neuropsychology, neurotechnology, neurotheology, numismatology, oneirology, onomatology, ontotheology, ornithichnology, orthopterology, osphresiology, palaeontology, palaetiology, paleontology, paletiology, paradoxology, parapsychology, parasitology, pathobiology, perinatology, philematology, photobiology, photogeology, phytolithology, phytopathology, picotechnology, polytechnology, protophytology, protozoology, psycho-oncology, psychobiology, psychoneurology, psychopathology, psychotechnology, pyramidology, radioecology, roman mythology, sedimentology, semasiology, social psychology, soteriology, stoichiology, suicidology, symptomatologie, symptomatology, synechiology, synosteology, systematology, telepathology, tephrochronology, terotechnology, testaceology, toreumatology, universology, venereology, xenobiology, zooarchaeology, zoomusicology, zoopathology, zoopsychology

7 syllables:
actinobiology, aestho-physiology, anaesthesiology, anesthesiology, animal psychology, anthropobiology, anthropomorphology, archaeozoology, asteroseismology, bioarchaeology, bioclimatology, biocoenology, biospeleology, bronchoesophagology, christian angelology, chronopharmacology, classical mythology, clinical neurology, clinical psychology, cognitive psychology, coleopterology, computer technology, dendroclimatology, dermatopathology, doctor of theology, ecophysiology, ecotoxicology, electro-biology, electrobiology, electrotechnology, enteradenology, epidemiology, epizootiology, ethnoarchaeology, ethnomethodology, ethnomusicology, ethnopharmacology, ferroequinology, financial technology, gastroenterology, genetic psychology, helioseismology, hematopathology, histophysiology, immunobiology, immunopathology, lepidopterology, macrosociology, malacostracology, marine archaeology, marine archeology, master of theology, microclimatology, micrometeorology, microsociology, morphophysiology, multimethodology, natural theology, neuro-ophthalmology, neuroimmunology, neuroophthalmology, neuropharmacology, neurophysiology, neuroradiology, neurotoxicology, onomasiology, orthokeratology, osteopathology, otolaryngology, palaeobiology, palaeodendrology, palaeoecology, palaeogeology, palaeopathology, palaeopedology, palaeornithology, palaeozoology, paleobiology, paleodendrology, paleoecology, paleogeology, paleomammalogy, paleopathology, paleophytology, paleornithology, paleozoology, pathophysiology, periodontology, physico-theology, physiopathology, phytophysiology, phytosociology, protoanthropology, protoarchaeology, protoarcheology, pseudoarchaeology, psychoimmunology, psychopharmacology, psychophysiology, psychosociology, radiobiology, rhinolaryngology, social anthropology, sociobiology, teleradiology, theriogenology, urogynecology, xenoarchaeology

8 syllables:
anthroposociology, astrometeorology, automotive technology, bachelor of technology, bachelor of theology, biometeorology, comparative psychology, cultural anthropology, department of biology, department of psychology, descriptive anthropology, differential psychology, economic geology, electro-physiology, electrophysiology, human paleontology, hydrometeorology, immunohematology, industrial psychology, intel graphics technology, islamic eschatology, micropalaeontology, micropaleontology, molecular biology, nanobiotechnology, neuroendocrinology, palaeoanthropology, palaeoclimatology, paleoanthropology, paleoclimatology, petroleum geology, physical anthropology, psychoneuroimmunology, radiopharmacology, seroepidemiology, xenodocheionology

9 syllables:
communications technology, department of anthropology, department of sociology, developmental psychology, esthesiophysiology, experimental psychology, list of angels in theology, neuropsychopharmacology, otorhinolaryngology, underwater archaeology, underwater archeology

10 syllables:
analphabetapolothology, pharmacoepidemiology, physiological psychology, wuhan institute of virology

12 syllables:
digital communications technology

3 syllables:
agency, blatancy, painfully, aimlessly, patiently, hastily, blazonry, faithfully, spaciously, papacy, wastefully, specialty, graciously, gracefully, vagrancy, shamefully, maidenly, atony, blatantly, latency, fatally, faithlessly, masonry, blamelessly, racially, saliency, crazily, tastefully, gracelessly, vacancy, gratefully, shamelessly, albany, awfully, balsamy, cautiously, cross-country, dauntlessly, doggedly, falsity, flawlessly, frostily, gaudily, laudably, lawfully, lawlessly, paucity, plausibly, raucously, saucily, solemnly, solvency, tawdrily, thoughtfully, thoughtlessly, wantonly, wrongfully

4 syllables:
favorably, press agency, outrageously, salaciously, contagiously, loquaciously, freemasonry, ungraciously, courageously, sagaciously, mistakenly, disgracefully, news agency, naivety, belatedly, impatiently, complacency, insatiably, disdainfully, tenaciously, androgyny, apostasy, craniotomy, dishonestly, hydropathy, implausibly, inaudibly, incautiously, metonymy, phlebotomy, sclerotomy, strabotomy, unlawfully

5 syllables:
unmistakably, unashamedly, inescapably, occasionally, ostentatiously, travel agency, episiotomy, inexhaustibly, meritocracy, tracheotomy

6 syllables:
employment agency, inefficaciously, mercantile agency, cardiomyopathy, homoeopathy

7 syllables:
cyclopean masonry, rotational latency, advertising agency, haemoglobinopathy, hemoglobinopathy

8 syllables:
regulatory agency

9 syllables:
central intelligence agency

11 syllables:
environmental protection agency

14 syllables:
international atomic energy agency