Synonyms|180Antonyms|66|Broader|0Narrower|0Related|367
1
perfect
1
pressureproof(adjective, tight, proof, impervious, hermetic)
1
pressurised(adjective, tight, proof, impervious, hermetic)
1
pressurized(adjective, tight, proof, impervious, hermetic)
1
proof against
1
punctureproof
1
raintight
1
rustproof
1
sea-kindly
1
sealable
1
sealed-in(adjective, tight, proof, impervious, hermetic)
1
secure
1
seepproof
1
shatterproof
1
shellproof
1
shut fast
1
smokeproof
1
smoketight
1
soundproof
1
steady
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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>