84 entries under reasonable topic. ×

3
just(sound, rational)
3
strong(adjective, sound, rational)
3
warrantable(adjective, sound, rational, justified)
2
acceptable(adjective, sound, rational, justified)
2
admissible(adjective, justified)
2
arguable(adjective, sound, rational, justified)
2
believable(adjective, sound, rational, conceivable)
2
fair
2
impregnable(adjective, sound, rational, safety)
2
justified
2
licit(adjective, legal, justified)
2
remissible
2
rightful
2
valid(adjective, sound, rational, justified)
1
authoritative(adjective, sound, rational)
1
credible(adjective, sound, rational, conceivable)
1
official(adjective, sound, rational)
1
rational(adjective, sound, conceivable, tenable)
1
solid(sound, rational)
1
understandable(adjective, slight, proper, justified)
10 years ago|4.2k views|share |citing 
APASmart Define. (2016). defensible thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/defensible/thesaurus/synonyms
ChicagoSmart Define. 2016. "defensible thesaurus" https://smartdefine.org/defensible/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, defensible thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/defensible/thesaurus/synonyms>.
MLASmart Define. "defensible thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/defensible/thesaurus/synonyms>