συναφής
From LSJ
ἃ γὰρ δεῖ μαθόντας ποιεῖν, ταῦτα ποιοῦντες μανθάνομεν → what we have to learn to do we learn by doing
English (LSJ)
ές,
A united, connected, Arist.PA667a7; κόλποι σ. ἀλλήλοις Id.Mu.393a21; ὑμὴν σ. αὑτῷ καὶ ἀστόμωτος Sor.1.57; τὸ ἄλειφα, ἅτε σ. ἐόν cohering, Hp.Morb.4.49; τὰ σ. connected matters, Phld.Oec. p.32 J.; but τὰ ξυναφέα the adjoining parts, Aret.SD1.7; ὁ σ. τόπος the next place, Dion.Byz.35; Gramm., τὸ συναφές A.D.Conj.217.18: c. dat., constructed with, Id.Synt.157.20.
German (Pape)
[Seite 1005] ές, verbunden, zusammenhangend, D. Hal. rhet. 7, 1.