15 entries under common topic. ×

8
fundamental(noun, adjective, part, decrease, important)
3
essential(noun, adjective, decrease, usual)
3
necessary(adjective, usual, unimportant, trivial)
2
main(adjective, inferior, usual, principal)
2
needed(adjective, usual)
2
normal(adjective, usual)
1
basic(noun, adjective, decrease, insignificant)
1
integral(adjective, usual)
1
usual
0
elementary(adjective, usual, advanced)
0
commonplace(adjective, usual)
0
old(adjective, usual)
0
ordinary(adjective, usual)
0
used(adjective, usual)
0
worn(adjective, usual)
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APASmart Define. (2016). extra thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/extra/thesaurus/antonyms
ChicagoSmart Define. 2016. "extra thesaurus" https://smartdefine.org/extra/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2016, extra thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/extra/thesaurus/antonyms>.
MLASmart Define. "extra thesaurus" 30 March 2016. Web. 21 September 2026. <https://smartdefine.org/extra/thesaurus/antonyms>