10 letters
- hierarchic20
- hieroglyph22
- hierophant18
- holographs20
- holography22
- holophytic23
- homocercal22
- homoerotic18
- homologate18
- horologies15
- horologist15
- hotchpotch25
- hyperalert18
- hypergolic23
- hypotactic23
- integrator13
- interloper15
- intertroop14
- lactogenic20
- larghettos15
- leafhopper22
- leathering16
- legateship18
- leptospire17
- lethargies15
- lighterage17
- lightproof21
- lipotropic20
- literators11
- literature12
- lithograph20
- lithophane19
- lithophyte20
- logorrheas15
- logorrheic18
- lophophore21
- meliorator14
- meritocrat16
- metaphoric21
- micrograph23
- microphage23
- negotiator13
- obliterate14
- ochlocrats19
- octarchies18
- octothorps18
- oecologies16
- oleographs18
- oligarchic21
- operagoers15
- operculate18
- ophthalmic24
- optometric19
- oratorical14
- orchestral16
- orogenetic16
- orographic20
- orthoclase16
- orthoepies15
- orthoepist15
- orthogonal16
- orthograde15
- orthopedic19
- orthoptera15
- otherwhile18
- overcharge21
- papergirls19
- paraplegic22
- paregorics18
- parritches18
- participle20
- pathetical19
- pathogenic21
- pathologic21
- peacockier23
- peashooter15
- peoplehood20
- perception20
- perceptual21
- percolated18
- percolates17
- percolator17
- perfoliate17
- periosteal14
- peripheral19
- perithecia18
- peritoneal15
- perorating16
- peroration14
- perpetrate16
- petroglyph23
- petrologic19
- phagocytic25
- philosophe21
- phlegmatic24
- phlogopite21
- phonograph23
- phonologic22
- phosphatic23
- phosphoric23
- photogenic21
- photograph22
- photolytic21
- photometer18
- photophase20
- photophore20
- phototoxic25
- pictograph23
- pigeonhole19
- pitchpoled23
- pitchpoles22
- planchette20
- pleiotropy19
- pleochroic22
- polychaete21
- porterages15
- postcoital17
- potlatched20
- potlatches19
- practicers19
- praetorial14
- pratincole18
- preachiest18
- preceptors19
- preceptory21
- preconcert20
- precontact20
- precooling20
- preethical19
- pregenital17
- prehearing18
- preheating18
- prelecting20
- prelection18
- prelogical20
- preplacing23
- preportion17
- prestorage15
- pretheater15
- prevocalic24
- procaryote18
- procercoid20
- proclaimer20
- procreated17
- procreates16
- procreator16
- procryptic24
- proctology21
- proctorial17
- proctoring19
- profligate19
- progenitor16
- proglottid17
- proglottis16
- projectile26
- prolocutor18
- pronephric22
- pronephroi19
- propagator18
- propertied17
- properties16
- prophecies21
- prophesier18
- propionate17
- propitiate16
- proportion17
- propraetor16
- proprietor16
- prorogated16
- prorogates15
- prospector19
- prosthetic18
- protecting19
- protection17
- protective20
- protectors16
- protectory18
- protocoled18
- protoplast17
- protostele14
- prototroph18
- prototypal19
- prototypic21
- protracted17
- protractor16
- protreptic19
- pyrophoric23
- pyrrhotite17
- radiophoto16
- ratcheting18
- reaccredit17
- realtering14
- receptacle20
- recharting18
- reciprocal20
- reclothing19
- recoloring17
- reconciler18
- recreating16
- recreation14