0
surefire
0
taut
0
tighter
0
unaffected(unyielding, unbending, resistant, unreceptive)
0
unapproachable(unaffected, unyielding, unbending, resistant, unreceptive)
0
unbending(unyielding, unreceptive)
0
unfaltering
0
unfeeling(unyielding, unbending, unreceptive)
0
unmodified
0
unmovable(unyielding, unbending, immobile, decided, unreceptive)
0
unmoved(unaffected, unyielding, unbending, resistant, unreceptive)
0
unpierceable(unaffected, unyielding, unbending, resistant, unreceptive)
0
unreceptive(unaffected, unyielding, unbending, resistant)
0
unwavering(unyielding, unbending, unreceptive)
0
unyielding(unbending, unreceptive)
0
verifiable
0
well-built
0
well-constructed
0
well-made
0
without loopholes
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11 years ago|4.7k views|share |citing 
APASmart Define. (2015). watertight thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/watertight/thesaurus/synonyms
ChicagoSmart Define. 2015. "watertight thesaurus" https://smartdefine.org/watertight/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, watertight thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/watertight/thesaurus/synonyms>.
MLASmart Define. "watertight thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/watertight/thesaurus/synonyms>