Etymology
Advertisement

sinful (adj.)

Old English synnfull "full of sin, wicked, unholy, contrary to the laws of God;" see sin (n.) + -ful. Weakened sense of "contrary to propriety or decency" is from 1863. Related: Sinfully; sinfulness.

updated on October 03, 2013

Advertisement
Advertisement
Definitions of sinful from WordNet

sinful (adj.)
characterized by iniquity; wicked because it is believed to be a sin;
he said it was sinful to wear lipstick
Synonyms: iniquitous / ungodly
sinful (adj.)
having committed unrighteous acts;
a sinful person
Synonyms: unholy / wicked
sinful (adj.)
far more than usual or expected;
Synonyms: extraordinary / over-the-top
From wordnet.princeton.edu, not affiliated with etymonline.