ἄχρηστος áchrēstos

Meaning

inefficient, i.e. (by implication) detrimental

In the King James Version: unprofitable

Derivation: from G1 (Α) (as a negative particle) and G5543 (χρηστός);

Where it is used

• Philemon 1:11 Formerly he was useless to you, but now he has become useful both to you and to me.