Ask at the forum if you have an Ancient or Modern Greek query!

εταιρόσυνος

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.

Greek Monolingual

ἑταιρόσυνος, -η, -ον (Α)
φίλος, φιλικός.
[ΕΤΥΜΟΛ. < εταίρος + -οσυνος (πρβλ. χαρμ-όσυνος)].