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96 ~ἀδόκιμος~ adokimos \@ad-ok’-ee-mos\@ from 1 (as a negative particle) and 1384; adj AV-reprobate 6, castaway 1, rejected 1; 8

1) not standing the test, not approved (See warnings)

1a) properly used of metals and coins

2) that which does not prove itself such as it ought

2a) unfit for, unproved, spurious, reprobate