Synonyms|251Antonyms|122|Broader|7Narrower|2Related|39
1
synergy
1
tenacity(noun, weakness, stubbornness, diligence, irresolution)
1
tenseness
1
tension
1
tightness
1
vigilance
1
watchfulness
0
accent
0
accomplishment(noun, regard)
0
achievement(noun, regard)
0
acuteness
0
air
0
alertness
0
application
0
arduousness
0
assiduity
0
awareness
0
billow
0
bulge
0
character
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APASmart Define. (2015). slackness thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/slackness/thesaurus/antonyms
ChicagoSmart Define. 2015. "slackness thesaurus" https://smartdefine.org/slackness/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, slackness thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/slackness/thesaurus/antonyms>.
MLASmart Define. "slackness thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/slackness/thesaurus/antonyms>