μανθάνω
Etym. from Root ΜΑΘ
I. "to learn", esp. "by inquiry"; and in aor. "to have learnt", i. e. "to understand, know", Od., attic; ἀεὶ γὰρ ἡβᾶι τοῖς γέρουσιν εὖ μαθεῖν Aesch.; οἱ μανθάνοντες, "learners, pupils", Xen.: —c. inf. "to learn to do, learn how to do", Il., Aesch., etc.
II. "to perceive by the senses, remark, notice", Hdt., Xen.:—with a part., μάνθανε ὤν, like ἴσθι ὤν, "know that" you are, Soph., etc.
III. "to understand, comprehend", Aesch., etc.:—often in Dialogue, μανθάνεις; Lat. tenes? d'ye see?— Answ., πάνυ μανθάνω, "perfectly!" Ar.
IV. in attic, τί μαθών; often begins a question, "having learnt" what? for "what new reason? wherefore"? id=Ar., etc.