683 entries under noun topic. ×

4
propriety(sense, intelligence, thought, judgment)
4
sagacity(feeling, understanding, knowledge, mind)
4
score(information, importance, sense, significance)
4
senses(sense, intelligence, thought, judgment)
4
smarts(feeling, understanding, ability, mind)
4
source(support, regulation, action, cause)
4
stimulus(feeling, drive, cause, desire)
4
substance(good, feeling, understanding, cause)
4
thinking(feeling, philosophy, cause, knowledge)
3
whyfor(action, information, cause, plan)
3
agreement(unity, consistency, rationality)
3
alibi(trick, explanation, excuse, evidence)
3
ambition(drive, desire, interest, object)
3
apprehension(understanding, mind, grasp, sense)
3
causation(source, root, origin, grounds)
3
consciousness(feeling, understanding, power, spirit)
3
drive(feeling, cause, desire, interest)
3
footing(support, action, cause, start)
3
good sense(expression, idiom, knowledge, connection)
3
head(power, spirit, mind, sense)
10 years ago|36k views|share |citing 
APASmart Define. (2016). reason thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/reason/thesaurus/synonyms
ChicagoSmart Define. 2016. "reason thesaurus" https://smartdefine.org/reason/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, reason thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/reason/thesaurus/synonyms>.
MLASmart Define. "reason thesaurus" 25 February 2016. Web. 28 September 2026. <https://smartdefine.org/reason/thesaurus/synonyms>