ἀργικέραυνος
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
English (LSJ)
ον,
A with bright, vivid lightning, epith. of Zeus, Il.19.121, al., Orph.Fr.21a, 168, Pi.O.8.3, Cleanth. Stoic,1.122.
Greek (Liddell-Scott)
ἀργικέραυνος: -ον, ὁ ῥίπτων ἀπαστράπτοντας κεραυνούς, ἐπίθ. τοῦ Διός, Ἰλ. Π. 121, κ. ἀλλ., Πινδ. Ο. 8. 3.