10 letters
- neologisms17
- neoplasias15
- nephrology21
- nomarchies19
- nomographs21
- nomography23
- nomologies17
- normalcies18
- normalises15
- nosocomial18
- nosologies14
- occasional18
- oceanology19
- ochlocracy24
- ochlocrats19
- octarchies18
- oecologies16
- oesophagus18
- oleographs18
- oligarchic21
- oligoclase17
- oligomeric19
- oligophagy22
- oligopsony19
- omophagies20
- omphaloses19
- oncologies17
- opalescing20
- ophthalmia21
- ophthalmic24
- oppositely19
- oppressing19
- oppression17
- organismal17
- orismology18
- orographic20
- orphanages18
- orphically22
- orthoclase16
- osmolarity16
- otoscopies16
- overclaims21
- oversimply23
- pachyderms24
- packhorses22
- palimpsest20
- palsgraves20
- panegyrics21
- pansophies19
- papergirls19
- papillomas21
- papyrology23
- parabioses16
- paralogism19
- paralysing19
- paralytics19
- paramedics20
- paranymphs24
- paraphyses20
- paraphysis20
- paraplegia19
- paraplegic22
- parashioth17
- paregorics18
- parenchyma24
- pargylines19
- paroxysmal26
- parsonages16
- pastorales14
- pastorship18
- pathologic21
- pauperisms20
- paymasters18
- peacockish25
- pearlashes16
- pelycosaur20
- peperomias19
- pericycles22
- perilymphs24
- periplasts17
- periscopes19
- periscopic22
- petroglyph23
- petrologic19
- phagocytes22
- phagocytic25
- phalangers19
- phalaropes19
- phanerogam21
- pharisaism18
- pharmacies21
- pharmacist21
- pharyngeal21
- pheromonal20
- philosophe21
- philosophy23
- phlebogram24
- phlegmatic24
- phlogopite21
- phonograms21
- phonograph23
- phonologic22
- phosphates20
- phosphatic23
- phosphides21
- phosphines21
- phosphites20
- phosphores20
- phosphoric23
- phosphorus21
- phosphoryl23
- photograms20
- photograph22
- photolyses18
- photolysis18
- photophase20
- photophore20
- photoplays21
- phrenology21
- phylaxises25
- phyllaries19
- physiology22
- pictograms21
- pictograph23
- piperonals18
- piroplasma20
- piroplasms20
- pitchpoles22
- plagiaries16
- plagiarise16
- plagiarism19
- planishers17
- plasmagels20
- plasmogamy24
- playhouses19
- playmakers23
- pleiotropy19
- pleochroic22
- plesiosaur15
- plowshares19
- plyometric22
- pogromists18
- polonaises15
- polyamides20
- polyamines20
- polyatomic22
- polychrome24
- polychromy26
- polygamies21
- polygamist21
- polygamize30
- polygamous22
- polygonies19
- polygraphs23
- polyhistor18
- polymathic24
- polymerase19
- polymerise19
- polymerism22
- polymorphs24
- polyparies19
- polyphagia23
- polyphasic24
- polyphones22
- polyphonic25
- polypodies20
- polysemies19
- polysemous20
- polytheism21
- pomologies19
- pomologist19
- poorhouses16
- popularise18
- porcelains18
- porphyrias20
- porphyries20
- posologies16
- practicals20
- pragmatics21
- praxeology25
- preciously20
- precocious20
- precooling20
- preholiday19
- prelogical20
- premycotic24
- preplacing23
- presbyopia21
- presbyopic24
- preschools19
- preshaping21
- pressingly19
- prevocalic24
- procambial23
- processing19
- procession17
- proclaimed21
- proclaimer20
- proctology21
- profligacy24