140 entries under basis topic. ×

10
idea(noun, form, end, understanding, philosophy)
10
incentive(noun, feeling, drive, cause, desire)
9
account(noun, verb, action, help, cover)
9
argument(noun, information, cause, case, base)
9
case(noun, action, cover, information, cause)
8
apology(noun, cause, trick, approval, argument)
8
call(noun, help, cause, start, benefit)
8
motivation(noun, action, drive, cause, start)
7
aim(noun, form, end, feeling, understanding)
7
inducement(noun, drive, cause, desire, interest)
7
plea(noun, trick, case, claim, approval)
7
pretext(noun, cover, cause, trick, base)
7
vindication(noun, cause, trick, approval, argument)
7
warrant(noun, verb, support, action, information)
7
wherefore(noun, information, cause, start, base)
7
why(noun, information, cause, start, informal)
6
antecedent(noun, feature, support, action, cause)
6
consideration(noun, feature, cause, influence, issue)
6
defense(noun, action, cover, cause, trick)
6
evidence(noun, support, action, information, cause)
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APASmart Define. (2016). reason thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/reason/thesaurus/synonyms
ChicagoSmart Define. 2016. "reason thesaurus" https://smartdefine.org/reason/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, reason thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/reason/thesaurus/synonyms>.
MLASmart Define. "reason thesaurus" 25 February 2016. Web. 22 September 2026. <https://smartdefine.org/reason/thesaurus/synonyms>