2
checked(verb, ascertained)
2
collected(adjective, calm, quiet, cool, solid)
2
confidence
2
infallible(certain, unquestionable, undisputable, inevitable)
2
level-headed(adjective, calm, cool, steady, casual)
2
levelheaded(adjective, calm, quiet, relaxed, casual)
2
nailed down(expression, adjective, clear, strong, simple)
2
necessary(adjective, certain, regular, expected, predictable)
2
on ice(expression, adjective, strong, easy, firm)
2
ordained(adjective, expected, predictable, necessary, inexorable)
2
peaceful
2
plucky(strong, tough, bold, wise, brave)
2
sealed(verb, adjective, certain, definite, sure)
2
sedate(adjective, calm, cool, steady, confident)
2
self-controlled(adjective, calm, quiet, relaxed, casual)
2
serene(adjective, calm, quiet, cool, relaxed)
2
smug(adjective, calm, cool, steady, tranquil)
2
spunky(bold, confident, courageous, fearless, intrepid)
2
steady(adjective, calm, strong, cool, certain)
2
surety
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APASmart Define. (2015). assured thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/assured/thesaurus/synonyms
ChicagoSmart Define. 2015. "assured thesaurus" https://smartdefine.org/assured/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, assured thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/assured/thesaurus/synonyms>.
MLASmart Define. "assured thesaurus" 9 December 2015. Web. 24 September 2026. <https://smartdefine.org/assured/thesaurus/synonyms>