![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/99/Wiktionary-logo-en-v2.svg/40px-Wiktionary-logo-en-v2.svg.png)
Look up sinful in Wiktionary, the free dictionary.
To be sinful is to have committed an act that violates a known religious rule.
Sinful may also refer to:
- Sinful (album), a 1979 hard rock album
- Sinful (film), a 1965 Mexican film
- Sinful (album), the 1987 debut solo album by Pete Wylie
- "Sinful" (song), the album's title track and Wylie's debut solo single