4
literal(adjective, correct, true, real, realistic)
4
operative(adjective, strong, power, legal)
4
pertinent(adjective, clear, sound, reasonable, sensible)
4
plausible(adjective, open, reasonable, sensible, solid)
4
realistic(adjective, open, honest, sensible, solid)
4
relevant(adjective, clear, sound, reasonable, appropriate)
4
sincere(adjective, simple, reasonable, easy, honest)
4
unadulterated(adjective, sound, right, reasonable, pure)
4
useful(adjective, good, open, direct, fit)
4
validated
4
vigorous(adjective, strength)
3
adamantine(adjective, strength)
3
close(adjective, apt)
3
determinative(adjective, sound, right, reasonable, honest)
3
dynamic
3
firm(clear, material, certain, definite, stability)
3
fit(adjective, good, open, correct, reasonable)
3
impressive(adjective, reasonable, solid, violent, important)
3
incontestable(clear, certain, definite, positive, confident)
3
normal(lawful, rightful)
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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>