Luokka Adjektiivitbulgariaenglantiespanjaesperantohollantiitaliajapanikreikkalatinalatvialiettuanorjaportugalipuolaranskaruotsisaksasuomitanskaturkkitšekkiunkarivenäjäviro

organoyttrium organozinc organozirconium organular orgasmic orgasmless orgasmlike orgastic orgiastic orgillous orgulous orichalceous orient orientable oriental Oriental Oriental Orthodox orientating orientational orientationist oriented orificial origamic origamilike originable original originant originary originative originless orismological orkish Orkneyan ormolu

ornamental ornate ornee ornery ornithic ornithologic ornithological orodispersable orodispersible orofacial orofaecal orofecal orogastric orogenic orogenital orographic orographical orological oronasal oropharyngeal Orosirian orotic orotracheal orotund orped orphan orphaned orphanlike Orphean Orphic orra orse orthoboric

orthocentric orthocephalic orthochromatic orthochronous orthoclastic orthodontic Orthodox orthodox orthodoxal orthodoxical orthodromic orthoepic orthoepical orthogamous orthogenetic orthogeriatric orthognathic orthognathous orthogonal orthograde orthographic orthographical orthographick orthokinetic orthologous orthometric orthomodular orthomolecular orthomorphic orthomyxoviral orthonormal orthonormalised orthonormalized