Synonyms|1.1kAntonyms|423|Broader|11Narrower|16Related|2.8k

24 entries under strong topic. ×

10
sound(adjective, complete, reasonable, healthy)
6
safe(adjective, sound, well)
6
sane(adjective, sound, reasonable, stupid)
6
stable(adjective, weak, sound, soft)
6
well(adjective, adverb, sound)
5
accurate(adjective, sound, well)
5
reliable(adjective, sound, well)
5
secure(verb, adjective, weak, sound)
5
valid(adjective, sound, right, false)
4
rational(adjective, sound, careless, stupid)
4
right(adjective, sound, well)
4
sure(adjective, sound, well)
3
balanced(adjective, sound, well)
3
correct(adjective, sound, well)
3
healthy(adjective, sound, well)
3
just(adjective, sound, well)
3
perfect(adjective, sound, well)
3
reasonable(adjective, sound, well, senseless)
3
true(adjective, sound, well)
2
certain(adjective, sound, well)
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APASmart Define. (2015). unsound thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unsound/thesaurus/antonyms
ChicagoSmart Define. 2015. "unsound thesaurus" https://smartdefine.org/unsound/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2015, unsound thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unsound/thesaurus/antonyms>.
MLASmart Define. "unsound thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/unsound/thesaurus/antonyms>