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, 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, patronomayology, 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:
senselessly, 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:
venomously, mendicancy, delicacy, genuinely, gentlemanly, petulantly, definitely, recusancy, creditably, eloquently, technocracy, delicately, evidently, questionably, delegacy, precedency, desolately, presidency, credulously, relevancy, celibacy, androgyny, apostasy, craniotomy, dishonestly, hydropathy, implausibly, inaudibly, incautiously, metonymy, phlebotomy, sclerotomy, strabotomy, unlawfully

5 syllables:
intentionally, irrelevantly, inevitably, intelligibly, antecedency, inelegantly, indefinitely, conventionally, eventually, irrelevancy, impenitently, professionally, exceptionally, unquestionably, preeminently, inefficacy, incredulously, heliolatry, affectionately, antecedently, malevolently, ungentlemanly, episiotomy, inexhaustibly, meritocracy, tracheotomy

6 syllables:
unintentionally, hypervelocity, cardiomyopathy, homoeopathy

7 syllables:
haemoglobinopathy, hemoglobinopathy