240 entries under adjective topic. ×

3
external
3
neither here nor there(expression, idiom, adverb, unimportant)
3
of no account(expression, idiom, mean, slight)
3
of no consequence(expression, idiom, slight, lower)
3
of no importance(expression, idiom, insignificant, unimportant)
3
parenthetical
3
phantasmal
3
secondary(dull, weak, lower, inferior)
3
tenuous(light, weak, slight, thin)
3
theoretical(fake, false, intellectual, abstract)
3
unconcrete
3
unnecessary(slight, lower, value, inferior)
3
weightless
2
apathetic
2
dinky(light, small, insignificant, unimportant)
2
dreamlike(form, false, negative, heavenly)
2
eerie
2
empty
2
extraterrestrial
2
frivolous(mean, slight, lower, thin)
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APASmart Define. (2015). immaterial thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/immaterial/thesaurus/synonyms
ChicagoSmart Define. 2015. "immaterial thesaurus" https://smartdefine.org/immaterial/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, immaterial thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/immaterial/thesaurus/synonyms>.
MLASmart Define. "immaterial thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/immaterial/thesaurus/synonyms>