496 entries under adjective topic. ×

13
needed(set, important, significant, capital)
13
real(material, natural, basic, genuine)
12
ingrained(characteristic, natural, individual, basic)
12
radical(importance, important, significant, original)
11
focal(important, significant, main, private)
11
grave(severe, importance, big, important)
11
mandatory(set, significant, basic, vital)
11
meaningful(importance, big, important, significant)
11
needful(set, important, significant, original)
11
obligatory(important, significant, critical, basic)
11
responsible(importance, valuable, duty, reliable)
11
serious(severe, importance, big, important)
11
weighty(importance, big, important, significant)
10
consequential(importance, big, important, significant)
10
first(important, significant, original, prominent)
10
gut(individual, intimate, secret, private)
10
internal(characteristic, natural, basic, intimate)
10
of the essence(expression, idiom, important, vital)
10
relevant(importance, big, significant, substantial)
9
basal(body, simple, plain, material)
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APASmart Define. (2016). essential thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/essential/thesaurus/synonyms
ChicagoSmart Define. 2016. "essential thesaurus" https://smartdefine.org/essential/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, essential thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/essential/thesaurus/synonyms>.
MLASmart Define. "essential thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/essential/thesaurus/synonyms>