2
outstanding(adjective, top, superior, important, opening)
2
preeminent(adjective, order, top, heavy, important)
2
prefatory(adjective, fresh, inchoate, germinal, experiential)
2
preliminary(original, first, early)
2
prime(adjective, order, top, heavy, head)
2
stellar(adjective, top, superior, important, prominent)
1
aboriginal(adjective, head, beginning, opening, original)
1
acmatic
1
advanced(adjective, lead, beginning, original, visible)
1
apical
1
at the cutting edge(expression, adjective, order, heavy, prime)
1
at the leading edge(expression, adjective, order, heavy, prime)
1
banner
1
basic(adjective, head, beginning, opening, original)
1
beginning(adjective, lead, head, fresh, original)
1
capital
1
climactic
1
early(adjective, head, beginning, opening, original)
1
elementary(adjective, head, beginning, fresh, original)
1
exordial
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APASmart Define. (2015). headmost thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/headmost/thesaurus/synonyms
ChicagoSmart Define. 2015. "headmost thesaurus" https://smartdefine.org/headmost/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, headmost thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/headmost/thesaurus/synonyms>.
MLASmart Define. "headmost thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/headmost/thesaurus/synonyms>