60 entries under small topic. ×

16
insignificant(adjective, dull, mean, light, weak)
16
unimportant(adjective, adverb, mean, light, slight)
14
trivial(adjective, mean, light, slight, lower)
13
inconsequential(adjective, mean, slight, lower, value)
12
irrelevant(adjective, adverb, mean, separate, slight)
9
trifling(adjective, mean, light, slight, lower)
8
petty(adjective, mean, light, weak, slight)
8
slight(adjective, mean, light, weak, lower)
7
inconsiderable(adjective, mean, slight, lower, value)
7
negligible(adjective, mean, light, slight, lower)
6
minor(adjective, mean, light, slight, lower)
6
nonessential(adjective, adverb, mean, slight, lower)
5
beside the point(expression, adjective, idiom, adverb, slight)
5
inappreciable(adjective, light, slight, insignificant)
5
minute(adjective, mean, slight, lower, value)
5
nugatory(adjective, slight, lower, value)
4
evanescent(adjective, slight, unimportant, insubstantial)
4
flimsy(adjective, light, weak, slight, thin)
4
incidental(mean, slight, insignificant, unimportant)
4
inconsequent(adjective, light, insignificant, inadequate)
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APASmart Define. (2015). immaterial thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/immaterial/thesaurus/synonyms
ChicagoSmart Define. 2015. "immaterial thesaurus" https://smartdefine.org/immaterial/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, immaterial thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/immaterial/thesaurus/synonyms>.
MLASmart Define. "immaterial thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/immaterial/thesaurus/synonyms>