17 letters
- interpopulational28
- interstimulations24
- intersubjectively41
- intersubjectivity40
- intertextualities27
- involuntarinesses26
- invulnerabilities29
- irreproducibility31
- jurisprudentially37
- latitudinarianism25
- lumpenproletariat30
- lymphogranulomata36
- macroevolutionary32
- macroglobulinemia35
- macroglobulinemic38
- macroinstructions29
- magnanimousnesses29
- maneuverabilities30
- medulloblastomata31
- mellifluousnesses29
- meritoriousnesses22
- mesembryanthemums38
- microcirculations32
- microencapsulated33
- microencapsulates32
- microevolutionary32
- microinstructions29
- micromanipulation33
- micromanipulators32
- microminiaturized38
- microreproduction32
- microvasculatures33
- miscellaneousness28
- mischievousnesses31
- miscommunications35
- mispronunciations30
- mistrustfulnesses27
- misunderstandings28
- mountainousnesses25
- multibillionaires28
- multiculturalisms32
- multidisciplinary33
- multigenerational27
- multimillionaires28
- multiprogrammings36
- multitudinousness27
- municipalizations39
- necessitousnesses23
- neurodegenerative27
- neurofibromatoses28
- neurofibromatosis28
- neuropathological31
- neuropathologists27
- neuropharmacology35
- neurophysiologies29
- neurophysiologist29
- neuropsychiatries29
- neuropsychiatrist29
- neuropsychologies32
- neuropsychologist32
- neuroradiological27
- neuroradiologists23
- neurotransmission24
- neurotransmitters23
- noncommunications34
- nonconstitutional26
- nonindustrialized33
- nonmanufacturings34
- nonproductiveness32
- nonsuperimposable33
- nucleophilicities32
- nullificationists28
- obstructivenesses29
- odoriferousnesses23
- openmouthednesses29
- opportunistically32
- opprobriousnesses28
- organophosphorous31
- overambitiousness29
- overcommunicating38
- overcommunication36
- overconscientious30
- overindustrialize34
- oversubscriptions32
- overzealousnesses33
- ovoviviparousness34
- particularization35
- perfunctorinesses29
- perspicaciousness31
- perspicuousnesses29
- pestiferousnesses25
- photocoagulations30
- photoconductivity37
- photoduplications32
- photofluorography36
- photojournalistic37
- photoreproduction31
- picturesquenesses35
- pleasurablenesses27
- polymorphonuclear37
- postbaccalaureate31
- postresurrections25
- postrevolutionary29
- precipitousnesses28
- prefigurativeness31
- prejudicialnesses36
- prequalifications38
- prestigiousnesses24
- pretentiousnesses23
- preternaturalness24
- promiscuousnesses29
- pseudoclassicisms32
- pseudoparenchymas36
- pseudopregnancies32
- psycholinguistics35
- psychosexualities36
- psychotherapeutic36
- punctiliousnesses28
- purposelessnesses26
- pyrometallurgical34
- quadricentennials35
- quarrelsomenesses32
- quatercentenaries32
- quattuordecillion35
- radioautographies26
- radioimmunoassays28
- reconceptualizing41
- reconstructionism29
- reconstructionist26
- recontextualizing42
- redistributionist23
- reindustrializing33
- repetitiousnesses22
- reproachfulnesses31
- reproducibilities29
- resourcefulnesses27
- revascularization36
- revolutionariness25
- ribonucleoprotein30
- roundheadednesses25
- rudimentarinesses24
- rumbustiousnesses27
- sanctimoniousness27
- saponaceousnesses26
- semiautomatically31
- semiconsciousness29
- semidocumentaries29
- sententiousnesses21
- sesquicentenaries32
- sesquicentennials34
- spiritualizations32
- splendiferousness28
- spontaneousnesses24
- structuralization33
- structurelessness24
- subcategorization36
- subclassification32
- subjectivizations47
- subordinatenesses24
- substantialnesses24
- substantivenesses27
- superbillionaires27
- supercivilization39
- superconductivity36
- superconglomerate31
- superconservative33
- supercorporations28
- superefficiencies34
- superfecundations31
- superfluousnesses28
- superheavyweights36
- superintellectual29
- superintelligence30
- superintendencies28
- superlativenesses27
- supermillionaires27
- superminicomputer35
- supernaturalistic27
- superplasticities28
- superregenerative28
- superromanticisms31
- superspectaculars32
- superspeculations30
- suppressibilities28
- suppressivenesses29
- supranationalisms27
- supranationalists24
- susceptiblenesses29
- suspensefulnesses28
- synchronousnesses28
- telecommunication33
- temerariousnesses22
- tempestuousnesses26
- temporomandibular33
- tendentiousnesses22
- thermoluminescent32
- thermoregulations27
- thoughtlessnesses26
- tintinnabulations26
- transilluminating28