75 entries under sound topic. ×

32
legitimate(adjective, clear, correct, right)
32
true(adjective, good, quality, open, direct)
26
authentic(adjective, quality, open, correct)
23
genuine(noun, adjective, quality, clear, open)
21
right(adjective, correct, reasonable, honest)
19
logical(adjective, characteristic, clear, right)
17
accurate(adjective, good, open, direct)
14
convincing(adjective, characteristic, good, clear, open)
14
reasonable(adjective, good, sensible, solid)
14
cogent(adjective, good, clear, power, direct)
13
substantial(adjective, characteristic, right, reasonable)
13
solid(adjective, good, clear, correct)
13
good(adjective, open, right, reasonable)
12
just(adjective, good, correct, right)
12
powerful(adjective, clear, power, direct)
11
lawful(adjective, right, proper, genuine)
11
sensible(adjective, good, clear, open)
10
telling(adjective, good, clear, direct)
10
persuasive(adjective, right, reasonable, solid)
10
potent(adjective, strength, right, reasonable)
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APASmart Define. (2016). valid thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/valid/thesaurus/synonyms
ChicagoSmart Define. 2016. "valid thesaurus" https://smartdefine.org/valid/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, valid thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/valid/thesaurus/synonyms>.
MLASmart Define. "valid thesaurus" 31 March 2016. Web. 20 September 2026. <https://smartdefine.org/valid/thesaurus/synonyms>