אֵם

From LSJ

Ἀμήχανον δὲ παντὸς ἀνδρὸς ἐκμαθεῖν ψυχήν τε καὶ φρόνημα καὶ γνώμην πρὶν ἂν ἀρχαῖς τε καὶ νόμοισιν ἐντριβὴς φανῇ → It is impossible to know the spirit, thought, and mind of any man before he be versed in sovereignty and the laws

Sophocles, Antigone, 175-7

English (Strong)

a primitive word; a mother (as the bond of the family); in a wide sense (both literally and figuratively (like אָב): dam, mother, X parting.