κόβαρος
From LSJ
οἷς πρόθεσίς ἐστιν ἀδικεῖν, παρ' αὐτοῖς οὐδὲ δικαία ἀπολογία ἰσχύει → not even a just excuse means anything to those bent on injustice | the tyrant will always find a pretext for his tyranny | any excuse will serve a tyrant
English (LSJ)
ἄνθρωπος, Hsch. κόβειρος, ὁ,
A jester, Id.: Adj., in pl., κόβειρα· γελοῖα, Id. κοβελίσκον· τρύβλιον, Id. κόγκαλος· κονιορτός, Id. (leg. κονίσαλος). κόγξ, onomatop., sound made by the voting-pebble as it fell into the urn, Id. κογχαλίζω, of shells, murmur, Id.
Greek (Liddell-Scott)
κόβαρος: «ὅνος» Ἡσύχ.