Proto-IE: *ōk'-
Meaning: quick, fast
Old Indian: āśú-, comp. āśīyan `fast, quick'
Avestan: āsu-, comp. āsyɔ̄ 'schnell'
Old Greek: ōkǘ- `schnell, geschwind'
Latin: ōcior, ōcius comp. `schneller'; acupedius, -a `schnellfüssig'
Celtic: OCymr di-auc `träge'; NCymr di-oc `träge', Bret di-ec `träge'
Russ. meaning: быстрый
