16 letters
- interterritorial18
- intertestamental22
- interventionisms26
- interventionists23
- interventricular27
- intervisitations22
- intervocalically32
- irresolutenesses19
- largeheartedness23
- latensifications25
- lightheartedness25
- macrolepidoptera30
- maladministering28
- malcontentedness27
- materializations30
- megagametophytes33
- meristematically29
- meteorologically29
- methylphenidates31
- microcalorimeter29
- microencapsulate31
- microgametocytes32
- microlepidoptera30
- micrometeorology30
- microphotometers30
- microsporangiate28
- mischaracterized37
- mischaracterizes36
- montmorillonites26
- multilateralisms26
- multilateralists23
- mysteriousnesses23
- nanotechnologies27
- neurotransmitter22
- nonarchitectures27
- nondeterministic26
- nonentertainment24
- nonintellectuals26
- noninterferences26
- noninterventions25
- nonmaterialistic25
- northeasternmost23
- northwesternmost26
- noteworthinesses23
- oligodendrocytes27
- organophosphates29
- ostentatiousness19
- osteoarthritides19
- overcommunicated35
- overcommunicates34
- overindebtedness27
- overorchestrated26
- overorchestrates25
- oxytetracyclines35
- pancreatectomies29
- parameterization32
- passionatenesses21
- phosphoglycerate34
- photodissociated26
- photodissociates25
- photointerpreter25
- photopolarimeter28
- phototypesetters26
- phytoflagellates31
- polyelectrolytes29
- portentousnesses22
- postencephalitic32
- postexperimental34
- predetermination25
- prekindergartens28
- preposterousness24
- pretechnological32
- protectivenesses27
- pseudocoelomates28
- quadricentennial34
- quarterfinalists31
- quintessentially32
- radioprotections24
- radiotelemetries21
- radiotelephonies24
- recontextualized39
- recontextualizes38
- redeterminations22
- regeneratenesses20
- reinterpretation21
- semidomesticated27
- septendecillions27
- sesquicarbonates33
- sesquicentennial33
- shortsightedness24
- slatternlinesses20
- southeasternmost23
- southwesternmost26
- spatiotemporally29
- sphygmomanometer35
- stenographically31
- stereoisomerisms22
- stereomicroscope28
- stereophonically29
- stereoregularity22
- stereoscopically29
- stoutheartedness21
- straightjacketed37
- superheterodynes26
- superintelligent26
- superintendences27
- superintensities22
- surefootednesses22
- syncategorematic30
- systematicnesses25
- systematizations31
- technicalization36
- technostructures27
- teleconferencing31
- teratocarcinomas26
- teratogenicities22
- terminablenesses25
- terminologically30
- territorialities17
- territorializing29
- tetrahydrofurans26
- tetramethylleads26
- transilluminated25
- transilluminates24
- transliterations19
- transmissometers23
- transubstantiate22
- unaffectednesses29
- unaffectionately31
- unalterabilities23
- uncharacteristic29
- underappreciated29
- underrepresented24
- undifferentiated27
- unexpectednesses33
- ungratefulnesses26
- unostentatiously23
- unsystematically30
- waterproofnesses26
- watertightnesses24