- Marked by or full of sin; wicked: sinful thoughts.
- Informal Extremely pleasing to the senses; sensuously enjoyable: sinful chocolate truffles.
(comparative more sinful, superlative most sinful)
From Middle English sinful, synful, senful, sunful, from Old English synnful (“sinful, guilty, wicked, corrupt"), equivalent to sin +"Ž -ful. Cognate with Dutch zondevol (“sinful"), German sÃ¼ndevoll (“sinful"), Danish syndefuld (“sinful"), Swedish syndfull (“sinful"), Icelandic syndfullur (“sinful").