Dictionary entry

ἄχρηστος

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament with Strong's

ἄ-χρηστος, -ον,

[in LXX: Ho 8:8 (חֵפֶץאַיִן), Wi 2:11, Si 16:1, al.;]

useless, unserviceable: opp. to εὔχρηστος, Phm 11.†