11 letters
- heterogonic19
- heterotopic19
- icosahedron18
- ideographic22
- interdicted17
- interspaced19
- ionospheric20
- octahedrons18
- orthopaedic20
- orthopedics20
- orthostatic16
- osteopathic19
- pacesetting20
- pantheistic20
- parenthetic20
- paresthetic19
- pentarchies20
- petticoated18
- pheneticist20
- photostatic19
- openhearted18
- jeopardised25
- graptolites17
- heliotropes17
- heteroploid18
- interpleads17
- interpolate16
- legionaries15
- lionhearted16
- lipreadings19
- literations13
- orientalist13
- pathologies19
- pathologist19
- pedestaling19
- periodontal17
- petrologies17
- petrologist17
- phenologies20
- philandered20
- philodendra20
- pigeonholed21
- pigeonholer20
- pigeonholes20
- hatemongers19
- hemipterans20
- hemoprotein20
- hemosiderin18
- heteroatoms16
- homeporting22
- homogenates19
- homogenised20
- homopterans20
- idempotents19
- impersonate18
- impetrating20
- impetration18
- importation18
- impregnated21
- impregnates20
- intermitted16
- intromitted16
- maidenhoods19
- marionettes15
- maternities15
- meditations16
- mesonephroi20
- metanephroi20
- metanephros20
- methodising20
- misanthrope20
- misoriented16
- mistreating17
- mithridates17
- moderations16
- modernities16
- monitorship20
- monographed23
- monophagies22
- nephrostome20
- optometries17
- optometrist17
- patrimonies18
- permeations18
- photometers19
- herniations15
- ingredients16
- integration15
- interesting15
- interpoints16
- interposing18
- negotiation15
- nitrogenase15
- opinionated17
- ordinations14
- orientating15
- orientation13
- ostentation13
- patronising18
- patternings18
- penetrating18
- penetration16
- pentahedron19
- personating18
- personation16
- heartstring16
- integrators14
- intergraded16
- intergrades15
- interparish17
- interrogate14
- ironhearted15
- irredentist13
- northeaster14
- ordinariest13
- originators14
- ornithopter17
- orographies18
- orthopteran17
- parishioner17
- partitioner15
- paternoster15
- perorations15
- headsprings20
- hesitations14
- hesperidins18
- hotpressing19
- instigators14
- interphases17
- interstates12
- ionospheres17
- operettists14
- orthoepists16
- parenthesis17
- parotitises14
- peashooters16
- pedestrians16
- pediatrists15
- photoresist16
- groundsheet18
- guttersnipe18
- houseparent18
- inaptitudes17
- ineptitudes17
- ingratitude16
- outdesigned17
- outpatients16
- outspeeding19
- outsprinted17
- outstarting15
- outsteering15
- outstridden15
- outstriding16
- pirouetting18
- inoperative19
- integrative18
- investigate18
- invigorated19
- invigorates18
- overediting19
- overheaping23
- overheating20
- overnighted21
- oversetting18
- overstating18
- overtighten20
- personative19
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