ὄλβιος ὅστις ἱστορίης ἔσχεν μάθησιν → happy the man who has gained knowledge through inquiry (Εuripides, fr. 910)
clumsy: P. and V. σκαιός, Ar. and P. ἄγροικος, V. ἀμήχανος.
uneducated: P. and V. ἄμουσος, ἀμαθής, Ar. and P. ἀπαίδευτος.
embarrassing: P. and V. ἄπορος ἀμήχανος (rare P.), Ar. and P. χαλεπός.