ἄχρηστος
Etym. χράομαι
I. "useless, unprofitable, unserviceable", Hdt., Thuc.: of an oracle, "without effect", Eur.:— ἄχρ. ἔς or πρός τι "unfit for" a thing, Hdt.; ἄχρ. τινι "useless" to a person, id=Hdt., Eur.
2. like ἀχρεῖος, of "useless, do-nothing" persons, Oratt.
3. act. "making no use of", c. dat., Eur.
II. (χρηστός) "unkind, cruel", Hdt.