Synonyms|380Antonyms|79|Broader|7Narrower|21Related|160
2
slowness
1
agility
1
deliberateness
1
deliberation
1
dilatoriness
1
lateness
1
lethargy
1
looseness
1
sluggishness
0
advisement
0
alienation
0
alteration
0
awkwardness
0
backwardness
0
breakability
0
brittleness
0
cabin
0
calculation
0
capriciousness
0
celibacy
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APASmart Define. (2015). fastness thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/fastness/thesaurus/antonyms
ChicagoSmart Define. 2015. "fastness thesaurus" https://smartdefine.org/fastness/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2015, fastness thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/fastness/thesaurus/antonyms>.
MLASmart Define. "fastness thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/fastness/thesaurus/antonyms>