old-fashioned
From LSJ
αὔριον ὔμμε πάσας ἐγὼ λουσῶ Συβαρίτιδος ἔνδοθι λίμνας → tomorrow I'll wash you one and all in Sybaris lake
English > Greek (Woodhouse)
adjective
P. and V. παλαιός, ἀρχαῖος, P. ἀρχαιότροπος, Ar. ἀρχαικός, Ar. and P. πρεσβυτικός.
your notions are old-fashioned: Ar. φρονεῖς ἀρχαϊκά (Nubes 821).