χρηστικός
ή, όν, Adv.
A.
knowing how to use, understanding the use of a thing, τῶν ὑπαρχόντων Arist. Oec. 1344b26; δεσποτικὴ ἐπιστήμη ἡ χ. δούλων Id. Pol. 1255b31: abs., δύναμις χ., opp. ὑπηρετική, Procl. in Prm. p.735 S.: also c. dat. (like the Verb), M.Ant. 7.55.
2.
of things, useful, serviceable, σώματος ἕξις Plu. Cat.Ma. 1: Sup., μέλι ‐ώτατον Id. 2.32e. Adv. ‐κῶς ib.80b: Comp. ‐ώτερον Arr. Epict. 2.9.19.