θηεῦντο

From LSJ

ὁ μὴ πεπλευκὼς οὐδὲν ἑόρακεν κακόν → anyone who hasn't sailed has never seen trouble

Source

French (Bailly abrégé)

v. θηέομαι.

Russian (Dvoretsky)

θηεῦντο: и ἐθηεῦντο эп. 3 л. pl. impf. к θηέομαι.