- Definitions|2
- Thesaurus|421
- Abbreviations|0
| fall(drop, slump) | |
| fall-off(drop, fall, slump) | |
| falling off(verb, expression, phrasal verb) | |
| flaccid | |
| flaccidness | |
| flatness | |
| floppiness(noun, softness, looseness, limpness) | |
| forgetfulness(noun, disregard, neglect, failure, carelessness) | |
| formlessness | |
| freeness | |
| frill(recklessness, licentiousness, wastefulness) | |
| hang | |
| hollow(drop, fall, slump) | |
| icing on the cake(expression, idiom, recklessness, licentiousness, wastefulness) | |
| inattentiveness(noun, disregard, neglect, carelessness, negligence) | |
| incaution | |
| incautiousness | |
| inconsideration(noun, disregard, negligence, inattention, abandonment) | |
| indulgence(disorder, abandon) | |
| lack of care(noun, expression, idiom, disregard, negligence) |
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| APA | Smart Define. (2015). slackness thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/slackness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "slackness thesaurus" https://smartdefine.org/slackness/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, slackness thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/slackness/thesaurus/synonyms>. |
| MLA | Smart Define. "slackness thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/slackness/thesaurus/synonyms> |