Synonyms|180Antonyms|66|Broader|0Narrower|0Related|367
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air-tight(adjective, tight, proof, impervious, hermetic)
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airproof(adjective, tight, proof, impervious, hermetic)
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ballproof
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bold
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bombproof
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burglarproof
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close
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compact
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corrosionproof
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dripproof
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dustproof
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dusttight
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enclosed(adjective, tight, proof, impervious, hermetic)
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fire-resisting
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fireproof
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fit for sea(expression, idiom)
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flameproof
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floodproof
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foolproof
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gas-tight(adjective, tight, proof, impervious, hermetic)
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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>