ῥαισέμεναι

From LSJ

ἐπέμψατε ἀγγέλους τοῖς ἀλλήλοις ὥστε ἔγνωτε τὸν κίνδυνον → you sent messengers to one another so that you knew the danger

Source

French (Bailly abrégé)

inf. fut. Act. épq. de ῥαίω.