Synonyms|445Antonyms|108|Broader|13Narrower|7Related|257
2
sentience(noun, understanding, knowledge, experience, grasp)
2
snap
2
thoroughness(noun, industry, assiduousness, meticulousness, vigilance)
2
thoughtfulness(noun, carefulness, attentiveness, vigilance)
2
vigil(noun, care, guard, lookout, sentry)
2
vigour
2
warning
2
wisdom(noun, sharpness, keenness, acuteness)
1
IQ(noun, understanding, mind, understand, sense)
1
absorption(noun, attention)
1
accuracy
1
acquaintanceship(noun, understanding, knowledge, experience, grasp)
1
action(noun, activity, study, go, movement)
1
acumen(noun, understanding, cool, mind, understand)
1
acuteness(sharpness, keenness, sensitivity, cleverness, quickness)
1
adroitness(sharpness, cleverness, quickness, nimbleness, deftness)
1
advertence
1
advertency
1
aliveness(noun, understanding, knowledge, experience, grasp)
1
animation(noun, activity, movement, force, plan)
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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>