Synonyms|556Antonyms|233|Broader|10Narrower|7Related|1k

71 entries under fundamental topic. ×

1
quintessential(adjective, significant, essential, basic, vital)
1
required(adjective, significant, essential, basic, vital)
1
requisite(adjective, important, significant, original, essential)
1
root(adjective, original, basic, primary)
1
simplest(adjective, simple, straightforward, basic)
1
uncompleted(simple, basic)
1
undeveloped(simple, basic, unsophisticated, imperfect)
1
vestigial(simple, basic, unsophisticated)
0
all-important(adjective, significant, essential, basic, vital)
0
binding(adjective, significant, essential, basic, vital)
0
capital(essential, key, principal)
0
compelling(adjective, significant, essential, basic, vital)
0
compulsory(adjective, significant, essential, basic, vital)
0
concealed(adjective, original, basic, primary)
0
de rigueur(expression, adjective, significant, essential, basic)
0
exigent(adjective, significant, essential, basic, vital)
0
expedient(adjective, significant, essential, basic, vital)
0
hidden(adjective, original, basic, primary)
0
incumbent on(expression, adjective, significant, essential, basic)
0
lurking(adjective, original, basic, primary)
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ChicagoSmart Define. 2015. "elementary thesaurus" https://smartdefine.org/elementary/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, elementary thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/elementary/thesaurus/synonyms>.
MLASmart Define. "elementary thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/elementary/thesaurus/synonyms>