5
solution(noun, report, account, answer, meaning)
4
case(noun, action, cause, reason, idea)
4
explication(noun, report, account, answer, meaning)
4
exposition(noun, action, cause, report, account)
4
foundation(noun, concept, understanding, philosophy, cause)
4
hypothesis(noun, concept, action, understanding, philosophy)
4
purpose(noun, good, understanding, cause, reason)
4
rhyme(noun, idiom, reason)
3
attribution(noun, suggestion, theory, supposition, attribution)
3
idea(noun, concept, understanding, philosophy, cause)
3
interpretation(noun, report, reason, account, suggestion)
3
occasion(noun, cause, reason, object, base)
3
pretense(noun, pretext)
3
ratiocination(noun, philosophy, connection, sense, explanation)
3
rationalisation
3
reason why(noun, expression, idiom, cause, reason)
3
score(importance, sense, significance, explanation, reasoning)
3
sense(noun, adjective, quiet, philosophy, reason)
3
why(noun, cause, reason, idea, case)
3
why and wherefore(noun, expression, idiom, action, cause)
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APASmart Define. (2015). rationale thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/rationale/thesaurus/synonyms
ChicagoSmart Define. 2015. "rationale thesaurus" https://smartdefine.org/rationale/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, rationale thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/rationale/thesaurus/synonyms>.
MLASmart Define. "rationale thesaurus" 22 December 2015. Web. 21 September 2026. <https://smartdefine.org/rationale/thesaurus/synonyms>