2
deliberation(noun, study, exercise, caution, thoughtfulness)
2
discernment(noun, understanding, knowledge, experience, grasp)
2
earnestness(noun, activity, care, vigor, intensity)
2
engrossment(noun, attention)
2
enterprise(noun, activity, movement, force, power)
2
fastidiousness(noun, trouble, regard, concern, care)
2
gingerliness(noun, trouble, regard, care)
2
insight(noun, judgment, sharpness, perception, keenness)
2
interest(noun, trouble, regard, concern, care)
2
meticulousness(noun, trouble, regard, concern, care)
2
perception(noun, understanding, knowledge, mind, experience)
2
percipience(noun, sharpness, keenness, acuteness)
2
perspicacity(noun, understanding, mind, understand, sense)
2
presence of mind(expression, idiom, attention)
2
promptness(noun, enthusiasm, reserve, sharpness, eagerness)
2
quick-wittedness(noun, perceptiveness, acuity)
2
regardfulness(noun, attention, vigilance)
2
sagacity(noun, understanding, understand, sense, judgment)
2
scrupulousness(noun, trouble, regard, concern, care)
2
sense(noun, understanding, mind, understand, intelligence)
11 years ago|8.1k views|share |citing 
APASmart Define. (2015). alertness thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/alertness/thesaurus/synonyms
ChicagoSmart Define. 2015. "alertness thesaurus" https://smartdefine.org/alertness/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, alertness thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/alertness/thesaurus/synonyms>.
MLASmart Define. "alertness thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/alertness/thesaurus/synonyms>