3
muse(verb, study, consider, favor, see)
3
nous(noun, knowledge, intelligence, wisdom, intellect)
3
origin(noun, regulation, cause, start, base)
3
perception(noun, form, end, feeling, understanding)
3
perspicacity(noun, understanding, knowledge, mind, grasp)
3
philosophize(verb, think, speculate, analyze, deduce)
3
plead with(verb, expression, encourage, influence, sway)
3
pretense(noun, pretext)
3
psyche(noun, feeling, understanding, power, energy)
3
rational
3
rationalisation
3
rationalism(noun, knowledge, attitude, sense, intelligence)
3
reason out(verb, expression, deliberate, excuse, justify)
3
reason why(noun, expression, idiom, cause, spur)
3
sake(noun, objective, justification)
3
sapience(noun, understanding, knowledge, mind, sense)
3
scrutinise
3
seed(cause, source, origin)
3
sensible
3
sensibleness(noun, knowledge, sense, intelligence, thought)
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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>