G0512–ἀνωφελής–anōphelēs

But avoid foolish questions, and genealogies, and contentions, and strivings about the law; for they are unprofitable and vain.

ἀνωφελεῖς anōpheleis “unprofitable”

For there is verily a disannulling of the preceding commandment on account of its weakness and unprofitableness.

ἀνωφελές, anōpheles “uselessness —”