Strong's G888 · Greek

ἀχρεῖος

achreios · akh-ri'-os

from 1 (as a negative particle) and a derivative of 5534 (compare 5532); useless, i.e. (euphemistically) unmeritorious

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 2 ἀ-χρεῖος , -ον ( χρεῖος , useful ), [in LXX: II Ki 6:22 ( שָׁפָל ), Ep. Je 17 *;] useless , unprofitable : Mt 25:30 , Lk 17:10 (MM, s.v.).† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain