Sinful - Vine's Expository Dictionary of New Testament Words
Sinful[ 1,,G268, hamartolos ]
an adjective, akin to hamartano, to sin," is used as an adjective, "sinful" in Mark 8:38; Luke 5:8; Luke 19:7 (lit., "a sinful man"); Luke 24:7; John 9:16, John 9:24 (lit., "a man sinful"); Romans 7:13, for which See SIN, A, No. 1
(a). Elsewhere it is used as a noun: See SINNER. The noun is frequently found in a common phrase in sepulchral epitaphs in the S.W. of Asia Minor, with the threat against any desecrator of the tomb, "let him be as a sinner before the subterranean gods" (Moulton and Milligan).
(1) In Romans 8:3, "sinful flesh" is, lit., "flesh of sin" (RV marg.): See SIN, No. 1
(2) For the RV of Romans 7:5, "sinful passions," See PASSION, No. 1.