ἀργικέραυνος
From LSJ
κακοὶ μάρτυρες ἀνθρώποισιν ὀφθαλμοὶ καὶ ὦτα βαρβάρους ψυχὰς ἐχόντων → eyes and ears are poor witnesses for men if their souls do not understand the language (Heraclitus Phil.: Fr. B 107; Testimonia: Fragment 16, line 6)
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.
French (Bailly abrégé)
ος, ον :
à la foudre éclatante de blancheur.
Étymologie: ἀργός¹, κεραυνός.