Synonyms|279Antonyms|51|Broader|5Narrower|1Related|302
3
increase
2
addition
2
determined
2
development
2
unrelenting
1
advance
1
descend
1
strengthening
1
unflinching
1
unyielding
0
accumulation
0
aggrandizement
0
application
0
arduousness
0
augmentation
0
boom
0
bulge
0
deepening
0
die
0
dilation
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APASmart Define. (2015). slackening thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/slackening/thesaurus/antonyms
ChicagoSmart Define. 2015. "slackening thesaurus" https://smartdefine.org/slackening/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2015, slackening thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/slackening/thesaurus/antonyms>.
MLASmart Define. "slackening thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/slackening/thesaurus/antonyms>