καταφλέγω
From LSJ
ὁ γὰρ μανθάνων κιθαρίζειν κιθαρίζων μανθάνει κιθαρίζειν → he who is learning the harp, learns the harp by harping
English (LSJ)
fut. -
A φλέξω Il.22.512: aor. -έφλεξα Hes.Sc.18:— burn up, consume, πυρί Il.cc., cf. Arist.Mu.400a31 (v.l. προς-), Plu. Caes.68, Diog.Oen.38, etc.; of a caustic drug, Paul.Aeg.6.31: metaph., of love, θεὸς ἄνδρα κ. AP5.9 (Alc.):—Pass., to be burnt, aor. 1 -εφλέχθην Th.4.133, D.S.8 Fr.11, Philostr.VA8.15: aor. 2 -εφλέγην J.AJ13.4.4, D.Chr.46.1.