11 letters
- gastronomic20
- goniometric20
- gramicidins21
- harmonicist20
- homopterans20
- icosahedron18
- identifiers16
- idiomorphic23
- imbrication21
- imipramines21
- impairments21
- impassioned19
- impatiences21
- imperialist18
- impersonate18
- impetration18
- implication22
- importances21
- importation18
- impositions18
- impotencies21
- imprecating23
- imprecation21
- imprecision21
- improvident23
- incorporate18
- incriminate19
- indications17
- indicatives20
- indirection17
- infanticide20
- infarctions19
- infirmaries18
- infirmities18
- infomercial22
- informatics21
- information19
- informative22
- infractions19
- inscription19
- inscriptive22
- inseminator16
- inspiration16
- interatomic18
- intercampus22
- interspaced19
- intimidates16
- intimidator16
- intricacies18
- iodinations14
- ionospheric20
- iproniazids25
- iridosmines16
- macerations18
- magnificoes23
- malediction20
- malposition19
- mandatories16
- manifestoed19
- manneristic19
- martensitic18
- matrimonies18
- mediatrices18
- medications19
- meditations16
- melioration16
- melioristic18
- mendacities19
- mendicities19
- meridionals17
- mesotrophic22
- metafiction21
- metrication18
- microcopies23
- microphones23
- micropipets23
- microsecond22
- midsections19
- militancies19
- militarised16
- miniskirted20
- ministerial16
- misanthrope20
- miscaptions21
- miscitation18
- miscreating20
- miscreation18
- misidentify21
- misinformed22
- mislocation19
- misoriented16
- misposition18
- moderations16
- modernistic19
- modernities16
- monitorship20
- monocracies21
- monogastric20
- morbidities18
- morphactins23
- motorcading21
- mucoprotein22
- myocarditis20
- nematicides19
- nematocides19
- neuroticism19
- nitrosamine16
- nondescript20
- nondomestic20
- nonoperatic19
- normalities16
- oceanfronts19
- octahedrons18
- officiaries20
- officiation21
- omnifarious19
- opinionated17
- ordainments17
- ordinariest13
- ordinations14
- orientalism16
- orthopaedic20
- orthopedics20
- ostracoderm18
- outpromised19
- overactions19
- paediatrics18
- palindromes20
- palindromic23
- parenthoods18
- parsimonies18
- partitioned16
- pathfinders21
- patrimonies18
- patronymics23
- percolation19
- perfections21
- perforation18
- peridotitic18
- periodicals19
- periodicity20
- periodontal17
- peristomial18
- peritonitis15
- permeations18
- perorations15
- personation16
- personified19
- phonemicist23
- pianofortes18
- picrotoxins25
- placidities19
- planimetric22
- pleinairism19
- pleinairist16
- politicians19
- politicised19
- pontificals22
- pontificate21
- portamentos18
- positronium19
- postdivorce22
- postforming23
- pratincoles19
- precautions19
- precipitins21
- predacities18
- predicament22
- predicating21
- predication19
- predictions19
- predominant20
- predominate19
- predynastic21
- prehominids21
- premodifies21
- premonition19
- prenotified19
- prenotifies18
- preposition18
- preromantic21
- primalities18
- prismatoids18
- procreation18
- proctodaeum22
- productions20
- profanities18
- proficients21
- profoundest20
- projections27
- propionates18
- prosecution19
- protections18
- provisioned20
- provitamins22
- proximities24
- pteranodons17
- pyrimidines21
- pyromancies23
- radiometric18