15 letters
- inconsideration22
- ineradicability26
- inexorabilities27
- infrastructures24
- inoperativeness24
- inseparableness24
- inspirationally24
- integrabilities22
- integrationists19
- intemperateness23
- interanimations21
- interbehavioral26
- interculturally26
- interfraternity22
- intergeneration20
- intergradations20
- interoperatives23
- interpenetrated21
- interpenetrates20
- interstratified20
- interstratifies19
- intolerableness22
- intracellularly26
- intracerebrally26
- intramuscularly28
- intransigeances23
- intransigeantly23
- intraperitoneal21
- intrapopulation25
- intrapreneurial22
- intravascularly28
- invulnerability29
- irasciblenesses23
- irrationalistic20
- irrationalities17
- irrefragability26
- irreparableness23
- keratinizations30
- lateralizations27
- lexicographical37
- liberalizations30
- literalizations27
- logographically32
- lucrativenesses25
- lymphangiograms34
- lymphogranuloma34
- macrophotograph33
- macrostructural27
- magistratically27
- malpractitioner26
- maneuverability30
- measurabilities23
- megacorporation27
- melodramatising26
- melodramatizing35
- memorablenesses26
- mensurabilities24
- metallographers27
- metallographies27
- methoxyfluranes35
- microbarographs31
- microphotograph33
- microradiograph29
- microsporangium31
- microstructural27
- mineralizations30
- mineralogically29
- mischaracterize35
- miserablenesses23
- misregistration21
- mistranscribing28
- mistranslations21
- monounsaturated23
- monounsaturates22
- multilateralism25
- multilateralist22
- multiracialisms27
- naturalizations28
- neutralizations28
- nonagricultural26
- nonaristocratic23
- nonbarbiturates24
- nonbiographical31
- noncelebrations25
- noncontemporary29
- noncooperations24
- nonhierarchical28
- nonphotographic32
- nonrandomnesses23
- nontransferable25
- oceanographical30
- operationalisms23
- operationalists20
- operativenesses23
- orchestrational22
- oscillographies27
- overabstracting28
- overaccentuated28
- overaccentuates27
- overachievement32
- overadjustments34
- overadvertising27
- overapplication30
- overarticulated25
- overarticulates24
- overassessments23
- overcentralized34
- overcentralizes33
- overdecorations24
- overdramatizing35
- overelaborating26
- overelaboration24
- overencouraging29
- overexaggerated31
- overexaggerates30
- overextractions30
- overextravagant33
- overgeneralized33
- overgeneralizes32
- overorchestrate24
- overprogramming33
- oversaturations21
- oxytetracycline34
- paleogeographic31
- pantisocratical26
- pantisocratists22
- paradoxicalness31
- paragenetically28
- parajournalisms33
- paralinguistics26
- parallelepipeds28
- parametrization31
- paramyxoviruses35
- paranormalities23
- pararosanilines21
- parasexualities27
- parasitizations28
- parasitological25
- parasitologists21
- parasympathetic31
- pectinesterases22
- penetrabilities23
- perdurabilities24
- pharmacotherapy33
- phonocardiogram30
- phonogramically33
- photodegradable28
- photoengravings30
- photogrammetric31
- photolithograph30
- photomicrograph33
- phototelegraphy30
- phrasemongering29
- physiographical33
- physiotherapies27
- physiotherapist27
- phytogeographer31
- phytogeographic34
- pleasurableness25
- plethysmographs33
- plethysmography35
- pluralistically28
- plutocratically30
- polyunsaturated25
- postirradiation20
- postoperatively28
- posttransfusion24
- practicableness29
- practicalnesses26
- prayerfulnesses26
- preagricultural27
- prearrangements25
- preferabilities25
- prefiguratively31
- preponderancies27
- preponderations24
- preregistration21
- preternaturally24
- procrastinating25
- procrastination23
- procrastinators22
- programmability32
- prosopographies28
- pseudepigraphon31
- psychobiography37
- psychotherapies30
- psychotherapist30
- radicalizations30
- radioactivities23
- radioautographs24
- radioautography26
- radiobiological26
- radiobiologists22
- radiochemically31
- radiometrically26
- radioprotection23
- radioprotective26
- radiostrontiums21
- radiotelegraphs24
- radiotelegraphy26