4
score(noun, information, importance, sense, significance)
4
senses(noun, sense, intelligence, thought, judgment)
4
smarts(noun, feeling, understanding, ability, mind)
4
source(noun, support, regulation, action, cause)
4
stimulus(noun, feeling, drive, cause, desire)
4
substance(noun, good, feeling, understanding, cause)
4
suppose(verb, order, consider, determine, settle)
4
thinking(noun, feeling, philosophy, cause, knowledge)
3
whyfor(noun, action, information, cause, plan)
3
think through(verb, expression, phrasal verb, study, consider)
3
agreement(noun, unity, consistency, rationality)
3
alibi(noun, trick, explanation, excuse, evidence)
3
ambition(noun, drive, desire, interest, object)
3
appraise(verb, study, consider, determine, resolve)
3
apprehension(noun, understanding, mind, grasp, sense)
3
assert(verb, present, maintain, claim, defend)
3
because of(verb, expression, phrasal verb)
3
canvass(consider, maintain, deliberate, argue, exchange)
3
causation(noun, source, root, origin, grounds)
3
conceive(verb, study, consider, resolve, figure)
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APASmart Define. (2016). reason thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/reason/thesaurus/synonyms
ChicagoSmart Define. 2016. "reason thesaurus" https://smartdefine.org/reason/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, reason thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/reason/thesaurus/synonyms>.
MLASmart Define. "reason thesaurus" 25 February 2016. Web. 21 September 2026. <https://smartdefine.org/reason/thesaurus/synonyms>