-οις

ὄϊς οἶς οἷς Ancient Greek Etymology 1 Alternative forms grc -οισι -οισιν epi aio ion ato tra Suffix grc suffix inflectional suffixes grc Attic Doric Dative plural of 2d second-declension nouns and adjectives Masculine dative plural of 1d first- and 2d second-declension adjectives Etymology 2 Alternative forms grc -ῶν Epic Ionic Attic Suffix grc suffix grc Aeolic nominative masculine singular of present and future active participles from con contracted verbs in grc -όω