65 entries under adjective topic. ×

1
hermetically-impervious(tight, proof, impervious, hermetic)
1
hermetically-sealed(tight, proof, impervious, hermetic)
1
leaktight(tight, proof, impervious, hermetic)
1
liquid-tight(tight, proof, impervious, hermetic)
1
nonleaking(tight, proof, impervious, hermetic)
1
perfect
1
pressureproof(tight, proof, impervious, hermetic)
1
pressurised(tight, proof, impervious, hermetic)
1
pressurized(tight, proof, impervious, hermetic)
1
sealed-in(tight, proof, impervious, hermetic)
1
secure
1
tightly sealed(tight, proof, impervious, hermetic)
1
totally enclosed(tight, proof, impervious, hermetic)
1
water-proof(tight, proof, impervious, hermetic)
1
water-tight(tight, proof, impervious, hermetic)
0
close-fitting
0
fixed
0
galeproof
0
indisputable
0
leak-proof
11 years ago|4.7k views|share |citing 
APASmart Define. (2015). watertight thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/watertight/thesaurus/synonyms
ChicagoSmart Define. 2015. "watertight thesaurus" https://smartdefine.org/watertight/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, watertight thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/watertight/thesaurus/synonyms>.
MLASmart Define. "watertight thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/watertight/thesaurus/synonyms>