26 entries under foundational topic. ×

9
essential(noun, adjective, important, unimportant, extra)
5
organic(adjective, unimportant, fundamental, inorganic)
2
fundamental(adjective, insignificant, secondary, grass-roots)
2
integral(adjective, complete, fundamental, nonessential)
0
amoebic(adjective, unimportant, trivial, fundamental)
0
anatomical(adjective, unimportant, trivial, fundamental)
0
axiological(adjective, insignificant, unimportant, fundamental)
0
biotic(adjective, unimportant, trivial, fundamental)
0
bottom-line(adjective, insignificant, unimportant, fundamental)
0
cellular(adjective, unimportant, trivial, fundamental)
0
choate(adjective, fundamental, secondary, grass-roots)
0
constituent(adjective, unimportant, fundamental, grass-roots)
0
grass-roots(adjective, insignificant, unimportant, fundamental)
0
grassroots(adjective, insignificant, unimportant, fundamental)
0
meat-and-potatoes(adjective, insignificant, unimportant, fundamental)
0
name of game(expression, adjective, idiom, extra, fundamental)
0
nitty gritty(expression, adjective, insignificant, unimportant, extra)
0
nubber(adjective, insignificant, unimportant, fundamental)
0
nuclear(adjective, fundamental, grass-roots)
0
part-and-parcel(adjective, part, fundamental, broken)
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APASmart Define. (2016). accessory thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/accessory/thesaurus/antonyms
ChicagoSmart Define. 2016. "accessory thesaurus" https://smartdefine.org/accessory/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, accessory thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/accessory/thesaurus/antonyms>.
MLASmart Define. "accessory thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/accessory/thesaurus/antonyms>