89 entries under authentic topic. ×

1
close(adjective, correct, true, thoughtful, sober)
1
dutiful(adjective, close, correct, firm, honest)
1
dyed-in-the-wool(adjective, close, correct, firm, honest)
1
enduring(adjective, close, complete, correct, warm)
1
exact(adjective, close, open, correct, right)
1
fast(adjective, close, correct, firm, honest)
1
firm(adjective, good, close, strong, correct)
1
hard-core(adjective, close, correct, firm, honest)
1
indubitable(adjective, clear, correct, right, flat)
1
kosher(adjective, open, correct, right, honest)
1
loving(adjective, close, open, correct, firm)
1
obedient(adjective, close, correct, firm, honest)
1
patriotic(adjective, close, correct, firm, honest)
1
precise(adjective, close, open, correct, right)
1
sound(adjective, strong, reasonable, honest, solid)
1
staunch(adjective, good, close, strong, correct)
1
steadfast(adjective, good, close, strong, correct)
1
string along with(expression, adjective, idiom, close, correct)
1
sure(adjective, good, close, strong, correct)
1
tried(adjective, good, close, strong, correct)
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APASmart Define. (2016). sincere thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/sincere/thesaurus/synonyms
ChicagoSmart Define. 2016. "sincere thesaurus" https://smartdefine.org/sincere/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, sincere thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/sincere/thesaurus/synonyms>.
MLASmart Define. "sincere thesaurus" 31 March 2016. Web. 28 September 2026. <https://smartdefine.org/sincere/thesaurus/synonyms>