10 letters
- homeopathy22
- homeported19
- homeschool21
- homocercal22
- homoerotic18
- homographs22
- homologate18
- homologies18
- homologize27
- homophobia23
- homophobic26
- homophonic24
- homopteran19
- homosocial19
- hormogonia18
- horologies15
- horologist15
- hydrologic21
- hypergolic23
- hypodermal22
- hypodermic24
- ideogramic19
- ideographs18
- ideography20
- imperators16
- implicated21
- importable20
- importance20
- imprecated20
- intermodal16
- isothermal16
- lacrimator17
- lagomorphs21
- largemouth19
- lightfaced22
- lightproof21
- limitrophe19
- lithograph20
- lithophane19
- locomoting20
- locomotive21
- logaoedics17
- logarithms18
- logorrheas15
- logorrheic18
- longhaired17
- lophophore21
- macrophage23
- macrophyte23
- madreporic20
- megalithic21
- megaphonic24
- megasporic21
- meliorated15
- meliorator14
- meritocrat16
- metaphoric21
- methodical20
- methyldopa22
- metropolis17
- microflora20
- micrograph23
- microliter17
- micromolar20
- microphage23
- microphone22
- micropores19
- microprobe22
- micropylar22
- microspore19
- microtonal18
- microworld21
- midrashoth18
- mimeograph23
- mischarged21
- miscolored18
- mislocated18
- mispatched22
- moderating17
- moderation15
- moderators14
- monopodial19
- morphactin22
- morphology23
- motherhood18
- motherland18
- motorcaded18
- motorcades17
- multigrade18
- mythologer20
- mythologic23
- mythopoeia20
- mythopoeic23
- octahedral17
- octahedron17
- octoploids18
- oleographs18
- oligomeric19
- omophagies20
- ophthalmia21
- ophthalmic24
- optometric19
- oratorical14
- orchardist16
- orchestral16
- ornithopod17
- orographic20
- orphanhood19
- orthoclase16
- orthogonal16
- orthograde15
- orthopedic19
- orthoptera15
- otherworld17
- outcharged19
- outcharmed20
- outmarched20
- palindrome19
- parametric19
- paregorics18
- parenthood17
- parritches18
- partridges16
- pathogenic21
- pathologic21
- pedologist17
- percolated18
- percolator17
- periodical18
- perorating16
- peroration14
- petrologic19
- pheromonal20
- phlebogram24
- phlegmatic24
- phlogopite21
- phonematic22
- phonologic22
- photodiode17
- photogenic21
- photograms20
- photograph22
- photomural20
- photophore20
- picarooned18
- pictograms21
- pictograph23
- pitchpoled23
- pleochroic22
- plyometric22
- polyatomic22
- polychrome24
- polymathic24
- pomologies19
- pomologist19
- potholders17
- potlatched20
- praetorial14
- pratincole18
- precooling20
- predictors17
- preethical19
- preholiday19
- prelogical20
- premarital17
- premedical21
- premolding21
- priesthood16
- primordial18
- procaryote18
- procedural19
- procercoid20
- proclaimed21
- proclaimer20
- procreated17
- procreator16
- proctodaea17
- proctology21
- proctorial17
- proctoring19
- prodromata17
- profligate19
- progenitor16
- proglottid17
- programmed22
- prolocutor18
- prologized26
- promotable20
- promulgate20
- prorogated16
- prorogates15
- prosodical18
- prostomial17
- protocoled18
- protoderms17
- protonemal18
- protracted17
- pyrethroid18
- pyrometric21
- radiograph18