11 letters
- insinuative18
- insistences16
- inspections19
- inspiration16
- inspissated16
- inspissates15
- inspissator15
- instinctive20
- intenerates13
- intenseness14
- intensifier16
- intensifies16
- intensities13
- interactive19
- intercensal17
- interchains18
- interleaves17
- internalise14
- internecine17
- internships18
- interphases17
- interspaced19
- interspaces18
- intersperse15
- interstices15
- interveners17
- interviewee19
- interweaves19
- intestacies15
- intricacies18
- intrinsical17
- invaginates19
- invariances20
- inventories17
- invernesses17
- iratenesses12
- italianises13
- itchinesses17
- itineraries12
- ivermectins22
- janissaries21
- linearities13
- linecasters16
- maintainers16
- manneristic19
- masterpiece20
- meatinesses15
- menservants20
- mesenteries15
- misperceive24
- naivenesses17
- narcissists15
- nastinesses13
- nattinesses13
- necessaries15
- necessitate15
- necessities15
- needinesses14
- nervinesses17
- nervosities16
- newscasters18
- nippinesses19
- noncreative20
- nonreactive20
- nonreceipts19
- overintense17
- overtnesses16
- pacesetters17
- paediatrics18
- pageantries17
- pancreatins19
- pantdresses16
- papaverines22
- parageneses17
- paragenesis17
- paragenetic20
- parasitised15
- parasitises14
- parasitisms17
- parasitizes23
- parasitoses14
- parasitosis14
- parcenaries18
- parentheses17
- parenthesis17
- paresthesia16
- participant21
- participate20
- participial21
- participles21
- passivating21
- passivation19
- passiveness19
- passivities18
- pasteurises15
- pastinesses15
- paternities15
- patisseries14
- patriciates17
- patronesses15
- pearlescent19
- peasantries15
- pederasties15
- pedestrians16
- peevishness21
- pendentives21
- penetrances19
- penetrative19
- pensiveness20
- pentarchies20
- pepperiness21
- peppinesses21
- percentages20
- percentiles19
- perceptions21
- percipience24
- percipients21
- perfectives24
- perfectness21
- peripatetic20
- peripatuses18
- peripeteias17
- peristalses15
- peristalsis15
- perkinesses19
- permanences22
- persecutees18
- persecutive22
- perseverate18
- persistence18
- persistency20
- personative19
- perspective24
- pertinences19
- pessimistic20
- pestilences19
- pettinesses15
- phenacaines21
- phenacetins21
- picaninnies20
- piperazines27
- piperidines19
- pithinesses17
- plainnesses17
- planarities16
- plasticenes19
- plasticines19
- pleinairist16
- preachiness20
- preadaptive22
- precessions18
- precipitant21
- precipitate20
- precipitins21
- preciseness18
- predacities18
- predeceases18
- predestines16
- predicative22
- preeminence22
- preenacting21
- prefascists20
- prefinances22
- pregnancies21
- preinvasion20
- preparative21
- prepositive21
- presciences21
- presentence19
- presentient16
- presentisms18
- presentness16
- presweetens18
- presynaptic23
- pretensions16
- prevalences23
- prevaricate21
- preventions20
- preventives23
- priestesses14
- primenesses18
- princeliest19
- princeships23
- privateness19
- privatising21
- pronenesses16
- prospective24
- proteinases15
- provenances23
- provenience23
- prussianise16
- psittacines18
- purtenances20
- putrescines19
- rancidities16
- ranginesses15
- rapidnesses16
- rascalities15
- reactivates18
- readinesses13