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αἴσχιστος

Ἓν οἶδα, ὅτι οὐδὲν οἶδα –> I know only one thing, that I know nothing | all I know is that I know nothing.
Diogenes Laertius, Lives of the Philosophers, Book 2 sec. 32.

French (Bailly abrégé)

Sp. de αἰσχρός.

Russian (Dvoretsky)

αἴσχιστος: superl. к αἰσχρός.