ἐρρύην

From LSJ

κέρκος τῇ ἀλώπεκι μαρτυρεῖ → you can tell a fox by its tail, small traits give the clue to the character of a person

Source

French (Bailly abrégé)

v. ῥέω.

Russian (Dvoretsky)

ἐρρύην: aor. 2 pass. к ρέω.