Vine's Expository Dictionary: View Entry
TDNT Reference: 2:255,181
not standing the test, not approved
properly used of metals and coins
that which does not prove itself such as it ought
unfit for, unproved, spurious, reprobate
Strong's Number G96 matches the Greek ἀδόκιμος (adokimos),
which occurs 8 times in 8 verses
in the TR Greek.