10 letters
- nosologies14
- nostalgist14
- notarizing23
- notochords17
- nourishing17
- novitiates15
- nutritions13
- octahedron17
- octonaries14
- octothorps18
- oesophagus18
- oinologies14
- oleographs18
- omnipotent18
- omniranges17
- omophagies20
- ontogenies14
- ontologies14
- ontologist14
- operagoing18
- operations14
- operettist13
- ophiuroids17
- opposition17
- oppressing19
- oppression17
- opsonified18
- opsonifies17
- opsonizing26
- optimising19
- orangewood17
- orchitises15
- ordainment16
- ordinances16
- ordinaries12
- ordination13
- organicist16
- organisers13
- organising16
- organzines23
- orientated12
- orientates11
- originated14
- originates13
- originator13
- ornateness12
- ornithines14
- ornithopod17
- ornithoses13
- ornithosis13
- orogenesis13
- orphanages18
- orphanhood19
- orthodoxes20
- orthoepies15
- orthoepist15
- orthogonal16
- orthograde15
- orthopedic19
- orthoptera15
- orthotists12
- osteitides11
- ostensoria11
- osteopaths15
- osteopathy17
- ostracised14
- ostracodes14
- otiosities10
- otoscopies16
- outdesigns15
- outearning15
- outgrinned16
- outgrossed14
- outhearing16
- outhitting16
- outpainted16
- outpassing17
- outpatient15
- outpointed16
- outraising14
- outreading15
- outrooting14
- outshining17
- outsitting14
- outsnoring15
- outsoaring14
- outspanned17
- outspreads15
- outsprints15
- outstaring14
- outstarted12
- outstating14
- outstation12
- outstrides12
- outtrading15
- ovaritides15
- overdosing18
- overhating19
- overhoping22
- overnights19
- overshoots16
- oversights18
- oviposited18
- ovipositor17
- ownerships19
- oxidations19
- oysterings15
- ozonations21
- pagination17
- paltriness15
- panegyrist18
- panettones15
- pangenesis17
- pansophies19
- pantheisms19
- pantheists16
- pantsuited16
- papistries16
- parasitise13
- parasitoid14
- parathions16
- parenthood17
- parentings17
- pargetting18
- parodistic17
- parsonages16
- partitions14
- partnering17
- partridges16
- passionate14
- pastedowns18
- pastorates13
- pastorship18
- patchiness19
- pathfinder20
- pathogenic21
- patientest14
- patinating17
- patination15
- patinizing26
- patisserie13
- patissiers13
- patricides17
- patriotism16
- patristics16
- patronages16
- patronised15
- patronises14
- patronized24
- patronizes23
- patterning17
- peashooter15
- pedantries15
- pedestrian15
- pediatrics17
- pediatrist14
- pedologist17
- penalising18
- penetrants15
- penologist17
- pensionary17
- pensioners15
- pensioning18
- pentathlon18
- pentatonic18
- perditions15
- peridotite14
- permission17
- permitting19
- perorating16
- peroration14
- peroxiding24
- persistent14
- persisting16
- personages16
- personated15
- personates14
- personator14
- personhood17
- persuading18
- persuasion15
- pertaining17
- pervasions18
- petitioned15
- petitioner14
- petticoats16
- phantasied17
- phantasies16
- phasedowns20
- phelonions18
- phenytoins19
- philanders18
- philistine17
- philtering19
- phlogiston19
- phonations17
- phonograms21
- phonolites17
- photodiode17
- photogenic21