6
island(noun, land, island)
6
isle(noun, island)
6
latchkey(noun, twist, item, wad, button)
6
operative(adjective, active, influential, functioning)
5
access(noun, approach, entrance, entry, admission)
5
answer(noun, return, report, account, means)
5
banner(noun, adjective, lead, head, indication)
5
crib(explanation, interpretation, reading, adaptation, conversion)
5
decisive(adjective, important, significant, essential, critical)
5
dominant(superior, important, outstanding, significant, prominent)
5
elementary(adjective, important, head, significant, beginning)
5
explication(noun, report, account, answer, meaning)
5
identify
5
indicator(noun, answer, solution)
5
islet(noun, island)
5
keystone
5
lead(noun, sign, prompt, hint, answer)
5
necessary(adjective, important, significant, essential, critical)
5
passkey(noun, twist, item, wad, button)
5
reef(noun, island)
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APASmart Define. (2016). key thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/key/thesaurus/synonyms
ChicagoSmart Define. 2016. "key thesaurus" https://smartdefine.org/key/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, key thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/key/thesaurus/synonyms>.
MLASmart Define. "key thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/key/thesaurus/synonyms>