18
smallest(noun, adjective, head, beginning, size)
17
lowest(noun, adjective, end, position, extreme)
15
slightest(noun, adjective, property, head, beginning)
14
minimal(adjective, position, trifling, negligible, minimum)
14
minimum(noun, adjective, amount, trifling, bottom)
13
unimportant(adjective, property, minimum, slightest, smallest)
11
minute(noun, adjective, size, slightest, smallest)
10
trivial(adjective, property, minimum, slightest, smallest)
9
fewest(adjective, minimum, slightest, smallest, tiniest)
9
littlest(adjective, minimal)
9
tiniest(adjective, size, slightest, smallest)
8
less
7
bottom(noun, adjective, position, slightest, smallest)
7
first(adjective, order, slightest, smallest)
7
infinitesimal(adjective, size, slightest, smallest)
6
microscopic(adjective, size, slightest, smallest)
6
minutest(adjective, slightest, smallest)
6
small
5
few
5
finical(adjective, property, slightest, smallest)
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APASmart Define. (2015). least thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/least/thesaurus/synonyms
ChicagoSmart Define. 2015. "least thesaurus" https://smartdefine.org/least/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, least thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/least/thesaurus/synonyms>.
MLASmart Define. "least thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/least/thesaurus/synonyms>