-φι(ν) : a
vestige of several old caseendings, appended to the stem-vowel of the
various declensions, (1st decl.) -ηφι,
-ῆφι (but ἐσχαρόφι), (2d
decl.) -όφι, (3d decl.) -έσφι (but ναῦφι); of persons only in two words, θεόφι, αὐτόφι. The form produced by the suffix may stand
for a gen. (ablative), or a dative (instrumental, locative), with or
without prepositions.