331 entries under noun topic. ×

2
discernment(understanding, knowledge, experience, grasp)
2
earnestness(activity, care, vigor, intensity)
2
engrossment
2
enterprise(activity, movement, force, power)
2
fastidiousness(trouble, regard, concern, care)
2
gingerliness(trouble, regard, care)
2
insight(judgment, sharpness, perception, keenness)
2
interest(trouble, regard, concern, care)
2
meticulousness(trouble, regard, concern, care)
2
perception(understanding, knowledge, mind, experience)
2
percipience(sharpness, keenness, acuteness)
2
perspicacity(understanding, mind, understand, sense)
2
promptness(enthusiasm, reserve, sharpness, eagerness)
2
quick-wittedness(perceptiveness, acuity)
2
regardfulness(attention, vigilance)
2
sagacity(understanding, understand, sense, judgment)
2
scrupulousness(trouble, regard, concern, care)
2
sense(understanding, mind, understand, intelligence)
2
sentience(understanding, knowledge, experience, grasp)
2
thoroughness(industry, assiduousness, meticulousness, vigilance)
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APASmart Define. (2015). alertness thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/alertness/thesaurus/synonyms
ChicagoSmart Define. 2015. "alertness thesaurus" https://smartdefine.org/alertness/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, alertness thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/alertness/thesaurus/synonyms>.
MLASmart Define. "alertness thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/alertness/thesaurus/synonyms>