Strong’s Greek
G512 — anopheles
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀνωφελής
anopheles — pronounced an-o-fel'-ace
from 1 (as a negative particle) and the base of 5624; useless or (neuter) inutility:--unprofitable(-ness). see GREEK for 1 see GREEK for 5624
2 occurrences in the KJV.
Titus 3:9
But avoid foolish questions, and genealogies, and contentions, and strivings about the law; for they are unprofitable and vain.
Hebrews 7:18
For there is verily a disannulling of the commandment going before for the weakness and unprofitableness thereof.