1 ŏnŭs, 1 onus 2 Onus, 2 Onus ŏnustō, onusto ŏnustus, onustus ŏnÿchintĭnus, onychintinus ŏnÿchĭnus, onychinus ŏnÿchĭpūncta, onychipuncta ŏnÿchītĭnus, onychitinus ŏnÿchītis, onychitis ŏnychnus, onychnus ŏnychus, onychus Onysĭa, Onysia Ŏnȳtēs, Onytes ŏnyx, onyx ŏpācĭtās, opacitas ŏpācō, opaco ŏpācus, opacus Ŏpālis, Opalis ŏpălus, opalus Ŏpĕcōnsīva, Opeconsiva ŏpella, opella ŏpĕra, opera ŏpĕrāns, operans ŏpĕrantĭus, operantius ŏpĕrārĭa, operaria ŏpĕrārĭus, operarius ŏpĕrātĭō, operatio ŏpĕrātŏr, operator ŏpĕrātōrĭus, operatorius ŏpĕrātrīx, operatrix 1 ŏpĕrātus, 1 operatus 2 ŏpĕrātŭs, 2 operatus ŏpercŭlō, operculo ŏpercŭlum, operculum ŏpĕrībō, operibo ŏpĕrīmentum, operimentum ŏpĕriō, operio ŏpĕrō, opero ŏpĕror, operor ŏpĕrōsē operose ŏpĕrōsĭtās, operositas ŏpĕrōsus, operosus ŏpertanĕus, opertaneus ŏpertē operte ŏpertĭō, opertio ŏpertō, operto ŏpertōrĭum, opertorium ŏpertum, opertum 1 ŏpertus, 1 opertus 2 ŏpertŭs, 2 opertus ŏpĕrŭī, operui ŏpĕrŭla, operula ŏpēs, opes opetis, opetis Ophārus, Opharus Ŏpheltēs, Opheltes ŏphĭăca, ophiaca Ŏphĭăs, Ophias ŏphĭcardēlŏs, ophicardelos Ŏphĭcī, Ophici ŏphĭdĭŏn, ophidion Ŏphĭētis, Ophietis Ŏphĭŏgĕnes, Ophiogenes ŏphĭŏmăchus, ophiomachus 1 ŏphīōn, 1 ophion 2 Ŏphīōn, 2 Ophion Ŏphīŏnĭdēs, Ophionides Ŏphĭŏphăgī, Ophiophagi ŏphĭostăphÿlē, ophiostaphyle Ophir, Ophir Ŏphītæ, Ophitae 1 ŏphītēs, 1 ophites 2 Ophītēs, 2 Ophites Ŏphĭūchus, Ophiuchus 1 ŏphĭūsa, 1 ophiusa 2 Ŏphĭūsa 2 Ophiusa Ŏphĭussa, Ophiussa Ophrādus, Ophradus ŏphrÿs, ophrys ophthalmĭa, ophthalmia ŏphthalmĭās, ophthalmias ophthalmĭcus, ophthalmicus ŏpĭcillum, opicillum Ŏpĭcōnsīva, Opiconsiva Ŏpĭcus, Opicus ŏpĭfĕr, opifer ŏpĭfex, opifex ŏpĭfĭcīna, opificina ŏpĭfĭcĭum, opificium Ŏpĭgĕna Jūnō, Opigena Juno ōpĭlĭō, opilio Opĭlĭus, Opilius ŏpīmātus, opimatus ŏpīmē opime Ŏpīmĭa, Opimia ŏpīmĭtās, opimitas Ŏpīmĭus, Opimius ŏpīmō, opimo ŏpīmus, opimus ŏpīnābĭlis, opinabilis