φιν
From LSJ
Καιροσκόπει (Καιρῷ σκόπει) τὰ πράγματ', ἄνπερ νοῦν ἔχῃς → Sanus es? Negotiorum observes tempora → Zur rechten Zeit tu alles, hast du nur Vernunft
English (LSJ)
= σφιν,
A v. σφεῖς A.11.
A v. -φι.
Greek (Liddell-Scott)
φιν: ἀντὶ σφιν, ἴδε ἐν λέξ. σφεῖς.
English (Autenrieth)
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.
see φι.