15 letters
- hendecasyllabic32
- hermeneutically29
- heterochromatic28
- histochemically32
- histopathologic28
- historiographic27
- holographically32
- homeopathically32
- horticulturally27
- horticulturists23
- humidifications29
- hydrobiological30
- hydrodynamicist30
- hydromechanical33
- hydrostatically27
- hypercatalectic32
- hypercritically32
- hypercriticisms31
- hypertonicities26
- ichthyosaurians26
- identicalnesses22
- identifications24
- ideographically30
- idiomaticnesses23
- illogicalnesses24
- immunodeficient31
- immunologically33
- implicativeness30
- impressionistic25
- inapplicability32
- incommunicative34
- inconspicuously31
- indemnification28
- indeterministic24
- individualistic27
- inefficaciously32
- ineradicability26
- inexplicability36
- inextricability32
- injudiciousness32
- insignificances29
- insignificantly29
- insufficiencies30
- intensification24
- interelectronic24
- interferometric25
- interscholastic25
- intricatenesses20
- ionospherically28
- irrationalistic20
- judiciousnesses31
- kinesthetically29
- lackadaisically31
- latensification24
- lexicalisations28
- lexicalizations37
- lexicographical37
- lickerishnesses26
- lignocellulosic29
- logarithmically30
- logographically32
- ludicrousnesses23
- macrocosmically34
- macroscopically34
- magistratically27
- magnetoelectric28
- maliciousnesses24
- martensitically26
- masochistically30
- mechanistically31
- mechanochemical36
- meroblastically29
- metafictionists25
- metalinguistics26
- metallurgically30
- metamathematics29
- metamorphically33
- microanalytical29
- microanatomical29
- microbarographs31
- microbiological31
- microbiologists27
- microcosmically34
- microdissection26
- microearthquake37
- microelectrodes26
- microelectronic29
- microevolutions28
- microgametocyte31
- microinjections35
- micromanagement31
- micrometeorites24
- micrometeoritic27
- micrometeoroids25
- micromorphology34
- microphotograph33
- microphotometer29
- microphotometry31
- microphysically35
- microporosities24
- microprocessors27
- microprojection37
- microprojectors36
- micropublishers31
- micropublishing34
- micropulsations27
- microradiograph29
- microscopically34
- microseismicity29
- microsporangium31
- microsporocytes29
- microsporophyll33
- microstructural27
- microstructures26
- microtechniques37
- microtonalities23
- mineralogically29
- misapplications29
- misarticulating26
- monospecificity33
- monosyllabicity31
- morphologically33
- morphophonemics35
- multiplications28
- musicalizations33
- necromantically30
- neuroanatomical25
- neurobiological27
- neuropathically29
- neuropathologic28
- neuroscientific27
- neurotoxicities27
- nonagricultural26
- nonantagonistic24
- nonaristocratic23
- nonastronomical25
- nonbiographical31
- nonbiologically30
- noncarcinogenic30
- noncertificated27
- nonhierarchical28
- nonimplications28
- noninsecticidal26
- nonintoxicating31
- nonmathematical29
- nonmatriculated26
- nonmetaphorical29
- nonparticipants27
- nonphotographic32
- nonrelativistic25
- nonsensicalness23
- nonspecifically33
- nucleophilicity32
- nucleosynthetic29
- objectification37
- oceanographical30
- officiousnesses26
- omnicompetences32
- ontogenetically26
- ophthalmoscopic35
- optoelectronics26
- organometallics26
- orthodontically26
- osteopathically27
- overapplication30
- overarticulated25
- overarticulates24
- overcommunicate33
- overcomplicated33
- overcomplicates32
- overmedications27
- paleobiological29
- paleoecological29
- paleogeographic31
- paleontological27
- paleozoological35
- palynologically32
- pantheistically28
- pantisocratical26
- paradoxicalness31
- paragenetically28
- paralinguistics26
- parasitological25
- parasympathetic31
- parenthetically28
- parthenogenetic27
- participational26
- particularising26
- particularistic26
- particularities23
- particularizing35
- pathogenicities26
- perfectionistic28
- peripatetically28
- perpendicularly31
- persnicketiness27
- personification26
- perspicaciously31
- perspicuousness27
- pessimistically28