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From LSJ
κοινὴ γὰρ ἡ τύχη καὶ τὸ μέλλον ἀόρατον → fortune is common to all, the future is unknown | fortune is common to all and the future unknown | fate is common to all and the future unknown
Spanish > Greek
δυσεξίλαστος, δυσμείλικτος, δύσπαυστος, δυσδιάλυτος, δυσπαρηγόρητος