Look up slackness in Wiktionary, the free dictionary.
Slackness may refer to:
- Slackness (Jamaican music), a subgenre of dancehall music
- Slackness, the lack of tension (physics)
- Resource slack in business
- Laziness
- Vulgarity in West Indian culture and behavior
Music
- Slackness, album by The Slackers
