77 entries under head topic. ×

23
central(adjective, lead, important, master)
20
principal(adjective, lead, important, significant)
18
fundamental(noun, adjective, important, significant)
17
main(adjective, lead, important, significant)
16
cardinal(noun, adjective, lead, important)
14
chief(adjective, lead, important, significant)
14
primary(adjective, lead, important, significant)
13
core(noun, adjective, lead, importance)
12
grand(adjective, lead, importance, master)
12
major(adjective, lead, important, significant)
12
prime(adjective, lead, important, significant)
10
basic(adjective, important, significant, beginning)
10
big-league(adjective, lead, importance, master)
10
leading(adjective, important, significant, beginning)
7
big league(adjective, lead, importance, master)
7
foremost(adjective, lead, important, master)
7
primal(adjective, lead, master, boss)
6
code(noun, answer, confidence, standard)
5
banner(noun, adjective, lead, indication)
5
elementary(adjective, important, significant, beginning)
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APASmart Define. (2016). key thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/key/thesaurus/synonyms
ChicagoSmart Define. 2016. "key thesaurus" https://smartdefine.org/key/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, key thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/key/thesaurus/synonyms>.
MLASmart Define. "key thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/key/thesaurus/synonyms>