50 entries under reasonable topic. ×

9
binding(adjective, sound, severe, rational)
7
convincing(verb, adjective, good, strong, sound)
5
persuasive(adjective, good, strong, sound, right)
5
powerful(verb, adjective, good, strong, sound)
5
valid(verb, adjective, sound, right)
3
compelling(adjective, good, strong, sound)
2
pure(adjective, good, sound, right)
2
strong(adjective, good, sound, right)
2
weighty(adjective, good, strong, hard, sound)
1
cogent(adjective, good, strong, sound)
1
potent(adjective, good, strong, sound, right)
1
right(good, sound, rational, genuine)
1
solid(good, sound, right, severe)
1
telling(adjective, strong, sound, sharp)
0
attested(good, sound, right, rational)
0
authentic(good, sound, right, rational)
0
authoritative(good, sound, right, rational)
0
bona fide(expression, good, sound, right)
0
conclusive(sound, rational, influential, winning)
0
confirmed(good, sound, right, rational)
<123>
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APASmart Define. (2015). stringent thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/stringent/thesaurus/synonyms
ChicagoSmart Define. 2015. "stringent thesaurus" https://smartdefine.org/stringent/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, stringent thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stringent/thesaurus/synonyms>.
MLASmart Define. "stringent thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/stringent/thesaurus/synonyms>