νέων

From LSJ

μηδενὶ συμφορὰν ὀνειδίσῃς, κοινὴ γὰρ ἡ τύχη καὶ τὸ μέλλον ἀόρατον → never mock a disaster, fate is common to all and the future unknown

Source

French (Bailly abrégé)

gén. pl. de νέος, νέον;
part. prés. de νέω.