67 entries under true topic. ×

1
straight(adjective, tough, correct, severe, firm)
1
systematic(adjective, close, correct, solid, exact)
1
ultraprecise(adjective, close, correct, solid, exact)
1
undistorted(right, perfect, exact, proper)
1
unmistakable(adjective, close, correct, solid, exact)
1
unmistaken(right, perfect, exact, proper)
0
matter of fact(expression, idiom, correct, solid, proper)
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APASmart Define. (2016). rigorous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/rigorous/thesaurus/synonyms
ChicagoSmart Define. 2016. "rigorous thesaurus" https://smartdefine.org/rigorous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, rigorous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/rigorous/thesaurus/synonyms>.
MLASmart Define. "rigorous thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/rigorous/thesaurus/synonyms>