47 entries under confident topic. ×

18
certain(adjective, correct, firm, solid, physical)
16
unquestionable(adjective, correct, right, honest, plain)
14
indubitable(adjective, clear, sound, correct, right)
13
positive(adjective, clear, correct, certain, real)
12
indisputable(adjective, certain, undisputed)
12
sure(adjective, clear, sound, correct, firm)
11
undeniable(adjective, clear, correct, right, firm)
10
irrefutable(adjective, clear, flat, firm, solid)
9
assured(adjective, certain, straightforward, definite, precise)
8
genuine(adjective, clear, sound, correct, right)
8
real(adjective, clear, sound, correct, right)
8
true(adjective, clear, sound, correct, right)
7
definite(adjective, clear, firm, solid, certain)
6
clear(adjective, hard, sound, firm, plain)
6
convinced(adjective, certain)
4
cocksure(certain, sure, guaranteed)
3
clear-cut(adjective, solid, certain, straightforward, definite)
3
decided(adjective, solid, certain, straightforward, definite)
3
firm(noun, adjective, clear, hard, sound)
3
fixed(adjective, clear, sound, firm, plain)
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APASmart Define. (2015). undoubted thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/undoubted/thesaurus/synonyms
ChicagoSmart Define. 2015. "undoubted thesaurus" https://smartdefine.org/undoubted/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, undoubted thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/undoubted/thesaurus/synonyms>.
MLASmart Define. "undoubted thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/undoubted/thesaurus/synonyms>