194 entries under sure topic. ×

1
alert(adjective, understanding, keen, sensible)
1
alive to(expression, adjective, understanding, keen, sensible)
1
all out(expression, full, definite, genuine)
1
apperceptive(adjective, understanding, keen, sensible, alert)
1
apprised(adjective, understanding, keen, sensible, alert)
1
attentive(adjective, understanding, keen, sensible, alert)
1
bent(adjective, determined, restrained, significant, usual)
1
beyond question(expression, adjective, set, indisputable)
1
cast-iron(definite, inflexible, intent, hard-and-fast)
1
cognizant(adjective, understanding, keen, sensible, alert)
1
cool(adjective, firm, solid, extraordinary, unusual)
1
discerning(adjective, understanding, keen, sensible, alert)
1
felt(adjective, understanding, keen, sensible, alert)
1
flat out(expression, adjective, complete, total, significant)
1
hep to(expression, adjective, understanding, keen, sensible)
1
important(adjective, energetic, vigorous, significant, definite)
1
in on(expression, adjective, understanding, keen, sensible)
1
in right mind(expression, adjective, idiom, understanding, keen)
1
keen(adjective, understanding, sensible, alert)
1
mindful(adjective, understanding, keen, sensible, alert)
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APASmart Define. (2016). certain thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/certain/thesaurus/synonyms
ChicagoSmart Define. 2016. "certain thesaurus" https://smartdefine.org/certain/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, certain thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/certain/thesaurus/synonyms>.
MLASmart Define. "certain thesaurus" 31 March 2016. Web. 22 September 2026. <https://smartdefine.org/certain/thesaurus/synonyms>