ἐπι

"ἐπι"

Governs cases: takes accusative, genitive, or dative depending on context

Meaning with accusative: onto, up to, towards (motion onto a surface or towards a goal)

Meaning with genitive: upon, on, over (position or resting upon, sometimes concerning topics)

Meaning with dative: on, at, in addition to (location or time, less common in Classical usage)

Composition: simple preposition; not inflected

Accent note: generally written ἐπί, with an accent (acute on ultima with following word, grave when not enclitic), though in isolation may appear as 'ἐπι'