10 letters
- hectograph22
- hectometer18
- helicopter19
- heliometer16
- heliotrope16
- hematology20
- hemorrhage19
- heptachlor21
- heptameter18
- hereafters15
- heretofore15
- heretrices15
- hermetical19
- hermitages17
- heteroatom15
- heterogamy19
- hexameters22
- hologamies18
- holographs20
- homeopaths20
- homeported19
- homocercal22
- homogenate18
- homografts20
- homographs22
- homologate18
- homopteran19
- horsepower18
- horseraces15
- hygrometer19
- hyperalert18
- hypermeter20
- hypsometer20
- imperators16
- imprecates19
- isothermal16
- lachrymose21
- lagomorphs21
- lampooners18
- largemouth19
- larghettos15
- latecomers17
- legateship18
- leptosomes17
- lethargies15
- logarithms18
- logographs20
- logorrheas15
- logorrheic18
- macerators16
- macromeres19
- macrophage23
- macrophyte23
- madrepores17
- marketeers17
- megalopses19
- megaparsec21
- megaphones21
- megaspores18
- megasporic21
- meliorates14
- meliorator14
- mercurates17
- mesogloeas16
- mesosphere18
- mesothelia16
- mesothorax22
- metaphoric21
- metaphrase18
- metropolis17
- micrograph23
- microphage23
- micropores19
- microspore19
- moderators14
- monographs21
- morphogens21
- mortarless14
- mortgagees17
- mortgagers17
- mortgagors17
- motherless16
- motorcades17
- mythologer20
- necropoles18
- neglecters17
- nomographs21
- ochlocrats19
- octameters16
- oleographs18
- omophagies20
- omphaloses19
- opalescent18
- operagoers15
- operculars18
- operculate18
- orchestral16
- orchestras15
- orographic20
- orthoclase16
- orthoepies15
- orthograde15
- orthoptera15
- outcharges18
- outmarches19
- outreaches16
- overarches19
- overcharge21
- overclears18
- overcomers20
- overeaters14
- overemotes17
- overmaster17
- overreacts17
- overreport17
- pacesetter16
- palmettoes17
- parameters16
- parchments22
- paregorics18
- parfleches22
- parritches18
- pathologic21
- patrollers15
- peacetimes19
- peashooter15
- peculators18
- pedometers17
- perborates16
- percentage19
- percolated18
- percolates17
- percolator17
- perfecters19
- perforates16
- perforator16
- performers19
- perimeters16
- periosteal14
- permafrost19
- persecutor17
- personator14
- perverters17
- petroleums18
- petrologic19
- phagocytes22
- phenolates17
- pheromonal20
- pheromones19
- phlebogram24
- phlegmatic24
- phlegmiest21
- phonograms21
- photocells20
- photograms20
- photometer18
- photomural20
- pictograms21
- placements21
- plasterers14
- polychaete21
- polychrome24
- polymerase19
- porbeagles19
- porterages15
- portrayers15
- potholders17
- potlatches19
- potometers16
- poulterers15
- praelected18
- preachiest18
- preachment22
- precentors17
- preceptors19
- precleared18
- precollege20
- precreased17
- precreases16
- preembargo21
- preemptors19
- preethical19
- preformats19
- preharvest19
- preheaters15
- prelatures15
- prematures17
- premeasure17
- preprogram21
- prerecords17
- prerelease14
- preschools19
- preselects17
- prestorage15
- pretheater15
- procaryote18
- proclaimer20
- procreated17
- procreates16
- procreator16