65 entries under philosophy topic. ×

29
reason(noun, action, good, feeling, understanding)
11
grounds(noun, concept, action, cause)
11
principle(noun, concept, action, system)
10
basis(noun, concept, action, understanding)
10
theory(noun, concept, action, system)
6
argument(noun, concept, understanding, cause)
4
foundation(noun, concept, understanding, cause)
4
hypothesis(noun, concept, action, understanding)
3
idea(noun, concept, understanding, cause)
3
ratiocination(noun, connection, sense, explanation)
3
sense(noun, adjective, quiet, reason)
2
rule(noun, system, model)
1
antithesis and synthesis(noun, expression, adjective, idiom, quiet)
1
argumentation(quiet, connection, sense, forlorn)
1
assumption(understanding, system, belief, model)
1
belief(understanding, system, model, suggestion)
1
coherence(quiet, connection, sense, forlorn)
1
conjecture(understanding, system, belief, model)
1
connection(quiet, reason, sense, forlorn)
1
course of thought(noun, expression, adjective, idiom, quiet)
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APASmart Define. (2015). rationale thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/rationale/thesaurus/synonyms
ChicagoSmart Define. 2015. "rationale thesaurus" https://smartdefine.org/rationale/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, rationale thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/rationale/thesaurus/synonyms>.
MLASmart Define. "rationale thesaurus" 22 December 2015. Web. 24 September 2026. <https://smartdefine.org/rationale/thesaurus/synonyms>