18 letters
- interpretabilities26
- interrelatednesses22
- interrelationships26
- intersubstitutable28
- intransitivenesses25
- intraventricularly32
- introspectionistic29
- invulnerablenesses31
- irreconcilableness31
- irremediablenesses27
- irreplaceabilities29
- irrepressibilities25
- irreproachableness31
- irresistiblenesses23
- irresponsibilities26
- irresponsivenesses27
- irretrievabilities26
- landlubberlinesses31
- largeheartednesses25
- latitudinarianisms26
- lepidopterological33
- lepidopterologists29
- lightheartednesses27
- lipopolysaccharide37
- lumpenproletariats31
- lymphangiographies39
- macroglobulinemias36
- macrophotographies36
- magnetoresistances28
- magnetostrictively34
- maladministrations28
- mechanochemistries35
- melodramatizations36
- meretriciousnesses26
- metallographically37
- methylcholanthrene36
- methylprednisolone33
- microcalorimetries31
- microcrystallinity34
- microdensitometers29
- microdensitometric32
- microencapsulating36
- microencapsulation34
- microenvironmental35
- microlepidopterous33
- micromanipulations34
- micrometeorologies30
- micrometeorologist30
- micromorphological39
- micropaleontologic35
- microphotographers36
- microphotographies36
- microradiographies32
- microreproductions33
- mineralocorticoids30
- misadministrations27
- misinterpretations26
- misrepresentations26
- monochromaticities33
- mucopolysaccharide40
- multicellularities30
- multifariousnesses28
- myeloproliferative35
- neuroendocrinology31
- neuropharmacologic37
- neurophysiological34
- neurophysiologists30
- neuropsychiatrists30
- neuropsychological37
- neuropsychologists33
- neurotransmissions25
- nonanthropological33
- nonanthropologists29
- nonarbitrarinesses24
- noncomparabilities33
- nonconfrontational30
- noncooperationists27
- nondestructiveness30
- nondiscriminations29
- nonfraternizations34
- noninterchangeable33
- noninterventionist27
- nonrepresentatives28
- nonrevolutionaries27
- obstreperousnesses26
- organophosphoruses32
- orthogonalizations34
- orthopsychiatrists30
- oscillographically37
- otherworldlinesses27
- overcapitalization39
- overcentralization37
- overclassification33
- overcommercialized45
- overcommercializes44
- overcommunications37
- overconcentrations31
- overembellishments36
- overextrapolations34
- overfertilizations36
- overgeneralization36
- overidentification31
- overindebtednesses29
- overindustrialized36
- overindustrializes35
- overinterpretation27
- overoptimistically35
- overprotectiveness33
- overrepresentation27
- oversimplification36
- overspecialization39
- ovolactovegetarian33
- particularizations36
- pentachlorophenols35
- pentylenetetrazols36
- perchloroethylenes33
- perpendicularities31
- pertinaciousnesses27
- pheochromocytomata39
- phonocardiographic38
- phosphodiesterases29
- photodisintegrated28
- photodisintegrates27
- photolithographies33
- photolithographing36
- photomicrographies36
- photomorphogeneses34
- photomorphogenesis34
- photoreactivations31
- photoreproductions32
- piezoelectricities37
- polyacrylonitriles32
- polychromatophilia38
- polychromatophilic41
- polyesterification31
- polymorphonuclears38
- polyribonucleotide34
- postmillenarianism31
- praiseworthinesses27
- predestinarianisms27
- premillenarianisms31
- preposterousnesses26
- presumptuousnesses31
- proletarianization33
- pronounceabilities31
- propagandistically35
- propertylessnesses28
- provincializations40
- pseudoparenchymata37
- pseudotuberculoses32
- pseudotuberculosis32
- psychobiographical42
- psychopharmacology44
- quasiperiodicities35
- quattuordecillions36
- radiochromatograms32
- radiosensitivities24
- rambunctiousnesses31
- rechromatographies33
- rechromatographing36
- reconstructionisms30
- reconstructionists27
- recrystallizations35
- redistributionists24
- rehospitalizations34
- reinstitutionalize31
- remunerativenesses28
- renationalizations31
- reprehensibilities28
- representationally27
- representativeness27
- representativities26
- revascularizations37
- rhabdomyosarcomata35
- ribonucleoproteins31
- roentgenologically32
- sacrilegiousnesses26
- satisfactorinesses25
- semiconservatively36
- semipermeabilities31
- semiprofessionally32
- shortsightednesses26
- soporiferousnesses26
- spectrofluorimeter32
- spectrofluorometer32
- spectrofluorometry34
- spectrographically38
- spectroheliographs34
- spectroheliography36
- spectrohelioscopes33
- spectrophotometers32
- spectrophotometric35
- sphygmomanometries37
- stereophotographic33
- stereoregularities22
- stereospecifically34
- stoichiometrically33
- stoutheartednesses23
- structuralizations34
- subcategorizations37