κουφιοκέφαλος
From LSJ
ἀσκέειν, περὶ τὰ νουσήματα, δύο, ὠφελέειν, ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
Greek Monolingual
-η, -ο
άμυαλος, ανόητος, ελαφρόμυαλος.
[ΕΤΥΜΟΛ. < κούφιος + -κέφαλος (< κεφάλι), πρβλ. ξεροκέφαλος, χοντροκέφαλος.