11 letters
- interpreted16
- interpreter15
- interracial16
- interrelate13
- interrogate14
- interrogees14
- interrupter16
- interruptor16
- interschool18
- intertribal16
- intolerance17
- intrathecal18
- intricately18
- invigorator18
- ionospheric20
- ironhearted15
- irrelevance20
- isoelectric18
- kinetochore21
- latchstring20
- leatherneck22
- lecithinase18
- legionaries15
- legionnaire16
- legitimator17
- letterspace18
- libertinage18
- licentiates16
- lionhearted16
- lipoprotein19
- literations13
- logarithmic22
- logographic24
- luteotropic19
- luteotropin17
- lycanthrope23
- mantelpiece22
- melanophore21
- meliorating18
- melioration16
- metacentric21
- metagenetic20
- metanephric23
- metanephroi20
- metrication18
- microphonic26
- mineralogic21
- monographic25
- moonlighter20
- morphogenic25
- narcoleptic22
- natriuretic16
- necrologies18
- necrologist18
- necrophilia21
- necrophilic24
- necropoleis19
- negotiation15
- negotiators14
- negotiatory16
- negrophobia22
- neocortical19
- neocortices18
- neologistic18
- neophiliacs21
- nephelinite19
- nephrotoxic27
- neuroleptic20
- neuropathic21
- neurotropic19
- nociceptive25
- nomographic25
- nonathletic19
- noncritical20
- nonelectric20
- nonliterate14
- nonoperatic19
- nontropical20
- northeaster14
- northerlies15
- notorieties12
- obliterator15
- occultation20
- ochlocratic23
- oligarchies19
- oligochaete19
- ontogenetic18
- opalescence22
- openhearted18
- operational16
- optionality18
- optokinetic22
- orchestrate16
- orientalist13
- orientalize22
- orientating15
- orientation13
- originators14
- ornithopter17
- orographies18
- orthocenter17
- orthopaedic20
- orthopteran17
- osteopathic19
- outcapering21
- outcatching23
- outcheating20
- outcoaching23
- outpitching23
- outreaching20
- overarching23
- overcorrect21
- overheaping23
- overhearing20
- overheating20
- overleaping22
- overletting19
- overnighter20
- overoperate18
- overpricing24
- overprotect21
- overreacher20
- overtighten20
- overtoiling19
- pacesetting20
- pantheistic20
- paragenetic20
- parenthetic20
- paresthetic19
- parishioner17
- partitioned16
- partitioner15
- parturition16
- paternities15
- paternoster15
- pathologies19
- pathologist19
- pearlescent19
- pectination19
- pedogenetic21
- penetrating18
- penetration16
- penetrative19
- penicillate20
- penitential17
- penological22
- pentarchies20
- pentathlete18
- percentages20
- percentiles19
- perchlorate20
- percipience24
- percolating21
- percolation19
- percolators18
- peregrinate17
- perforating20
- perforation18
- pericranial19
- periodontal17
- perionychia22
- peripatetic20
- peristaltic18
- perithecial20
- perorations15
- perpetrator17
- pertinacity20
- petitionary17
- petitioners15
- petrologies17
- petrologist17
- pheneticist20
- phenologies20
- philanderer19
- phonetician21
- phonogramic25
- phonotactic23
- photometric22
- phototactic22
- picarooning21
- pigeonholed21
- pigeonholer20
- pigeonholes20
- pilocarpine22
- pinocytotic23
- pirouetting18
- pitchpoling26
- plaistering18
- planchettes21
- planimetric22
- platyrrhine20
- plecopteran22
- pleiotropic21
- plutocratic22
- pococurante22
- polarimeter18
- poltergeist17
- polycentric24
- polygenetic23
- polytechnic26