11 letters
- habitations17
- halocarbons21
- harmonicist20
- hectographs23
- heliotropic20
- heptachlors22
- heptarchies21
- herniations15
- hibernating20
- hibernation18
- hibernators17
- hierophants19
- homeopathic24
- homopterans20
- hyacinthine22
- hypertonias19
- hyphenation22
- hypotension20
- iceboatings20
- icosahedron18
- importances21
- imprecation21
- inbreathing20
- incarnation17
- inchoatives21
- incinerates16
- incinerator16
- incorporate18
- incubations20
- inebriation16
- infarctions19
- infractions19
- inhabitancy23
- inhabitants18
- inhalations16
- inharmonies18
- inheritance18
- inobservant20
- inscription19
- inseminator16
- insertional14
- insheathing19
- inspections19
- inspiration16
- interabangs18
- interaction16
- interbranch21
- interchains18
- internships18
- interparish17
- interpoints16
- interposing18
- interschool18
- invariances20
- invocations20
- ionospheric20
- lacerations16
- liberations16
- lithophanes20
- macerations18
- machination21
- machinators20
- maintainers16
- manneristic19
- marinations16
- mesotrophic22
- microphones23
- misanthrope20
- miscreation18
- monitorship20
- morphactins23
- nalorphines19
- nationalise14
- necrophilia21
- negrophobia22
- neophiliacs21
- nephrotoxic27
- neuropathic21
- nitrosamine16
- nonabrasive20
- nonabstract19
- nonaromatic19
- nonartistic16
- noncabinets20
- noncapitals20
- nondescript20
- nondiabetic20
- nonemphatic24
- nonhospital19
- nonoperatic19
- nonpartisan17
- nonphonetic22
- nonreactors16
- nonreceipts19
- nontheistic18
- nontropical20
- obscuration19
- observation19
- obstinacies18
- oceanfronts19
- octahedrons18
- operational16
- opinionated17
- ordinations14
- orientation13
- orthopaedic20
- orthopedics20
- osteopathic19
- overactions19
- paediatrics18
- paginations18
- pancreatins19
- pantheistic20
- parenthoods18
- parishioner17
- patchboards23
- patinations16
- patriciates17
- patrimonies18
- patronising18
- pectination19
- pentarchies20
- percolation19
- perionychia22
- perorations15
- personating18
- personation16
- phenacaines21
- phenacetins21
- phonemicist23
- phonetician21
- phosphorite21
- pianofortes18
- picarooning21
- picrotoxins25
- piscatorial18
- plainchants22
- planarities16
- poignancies21
- postcranial19
- praetorians15
- pratincoles19
- precautions19
- predication19
- predictions19
- prehistoric19
- preinvasion20
- prelibation19
- premonition19
- preposition18
- probational19
- probationer18
- procreation18
- profanation19
- profanities18
- proficients21
- prohibition20
- projections27
- propionates18
- prosecution19
- prosobranch23
- protections18
- prothoraces19
- pteranodons17
- radiophones18
- ratiocinate15
- rationalise13
- reanimation16
- recantation16
- recitations15
- recognition18
- recombinant22
- recondition17
- relocations16
- renovations17
- reobtaining18
- reparations15
- replication19
- repositions15
- reprobation18
- resignation15
- respiration15
- retinoscopy20
- revocations19
- rhetorician17
- rhizoctonia26
- romanticise18
- senatorship17
- separations15
- shoehorning19
- shortchange21
- snapshooter17
- sociopathic22
- sonications16
- speciations18
- sphincteric23
- spirochaete19
- spirochetal20
- stanchioned19
- stenobathic20