10 letters
- inheritors13
- initiators11
- inpatients15
- insertions12
- inspectors17
- inspirator14
- inspissate14
- instigates13
- instigator13
- integrator13
- intercrops17
- intercross14
- interfaith16
- internists12
- internship17
- interparty16
- interphase16
- interpoint15
- interposer14
- interposes14
- interprets14
- interrupts15
- intertrial12
- intertroop14
- intimaters14
- intradoses12
- introspect17
- introverts15
- ionophores16
- ionosphere16
- ironmaster14
- ironstones12
- irridentas12
- irritation11
- irruptions15
- isentropic17
- isochrones16
- isolations12
- isooctanes14
- isoprenoid15
- isospories13
- isotropies13
- iterations11
- itinerants12
- itinerates11
- lanosities12
- lipotropin18
- literation12
- literators11
- lithopones17
- mastership18
- mentorship19
- ministates14
- mishanters16
- misorients14
- misreports16
- monetarist14
- monitories14
- monotheist16
- moronities14
- morosities13
- natrolites12
- negotiator13
- neophilias17
- neotropics17
- nephrotics19
- nepotistic17
- neurospora15
- nightspots18
- nitrations12
- nodosities12
- nonartists12
- nonrioters12
- nonstarter12
- nonstories12
- nontheists14
- noospheres16
- northeasts13
- northwests16
- notepapers17
- nourishers14
- novitiates15
- octonaries14
- octothorps18
- operations14
- opposition17
- oppressing19
- oppression17
- oppressors16
- opsonifies17
- orchestras15
- orchitises15
- ordinaries12
- organisers13
- orientates11
- originates13
- originator13
- ornithines14
- ornithopod17
- ornithoses13
- ornithosis13
- orrisroots10
- orthoepies15
- orthoepist15
- orthoptera15
- orthotists12
- ostensoria11
- osteopaths15
- osteopathy17
- otiosities10
- otoscopies16
- outsprints15
- overprints18
- overshirts16
- overshoots16
- overstrain15
- overtrains15
- ovipositor17
- ownerships19
- paltriness15
- pansophies19
- pantheisms19
- pantheists16
- paperiness17
- papistries16
- parasitise13
- parathions16
- paratroops16
- parenthood17
- parritches18
- partitions14
- parturient15
- passionate14
- pastorates13
- pastorship18
- patchiness19
- patisserie13
- patissiers13
- patriotism16
- patristics16
- patronised15
- patronises14
- patronizes23
- peashooter15
- pediatrist14
- perditions15
- periphyton21
- periplasts17
- permission17
- perorating16
- peroration14
- persistent14
- persisting16
- personates14
- personator14
- personhood17
- perspiring19
- persuasion15
- pervasions18
- petitioner14
- phantasies16
- phonations17
- phonolites17
- phosphates20
- phosphines21
- phosphites20
- phosphores20
- photophase20
- photophore20
- photostats15
- phototaxes22
- phototaxis22
- pianoforte17
- pinsetters14
- pinspotter17
- pinstriped18
- pinstripes17
- piperonals18
- pipestones17
- pistachios18
- pistareens14
- pityriases15
- planishers17
- podiatries14
- podiatrist14
- poetasters13
- poinsettia14
- polarities14
- polonaises15
- ponderosas15
- poorhouses16
- porosities13
- porphyrias20
- porphyries20
- porphyrins21
- portamenti17
- portamento17
- portentous15
- portliness15
- positional15