ὅτου

From LSJ

Οὐκ ἔστι σιγᾶν αἰσχρόν, ἀλλ' εἰκῆ λαλεῖν → Silere non est turpe, sed frustra loqui → nicht Schweigen schändet, sondern Schwätzen auf gut Glück

Menander, Monostichoi, 417

French (Bailly abrégé)

att. p. οὗτινος, gén. de ὅστις.

English (Abbott-Smith)

ὅτου v.s. ὅστις

English (Strong)

for the genitive case of ὅστις (as adverb); during which same time, i.e. whilst: whiles.

Russian (Dvoretsky)

ὅτου: (= οὗτινος) gen. к ὅστις.