Synonyms|17Antonyms|0|Broader|0Narrower|0Related|0

17 entries under adjective topic. ×

1
impermeable
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airtight
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close-fitting
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fast
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firm
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fixed
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hermetic
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hermetically sealed
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impenetrable
0
impervious
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sealed
0
secure
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secured
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snug
0
tight
0
waterproof
0
watertight
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APASmart Define. (2011). leak-proof thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/leak-proof/thesaurus/synonyms
ChicagoSmart Define. 2011. "leak-proof thesaurus" https://smartdefine.org/leak-proof/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2011, leak-proof thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/leak-proof/thesaurus/synonyms>.
MLASmart Define. "leak-proof thesaurus" 29 May 2011. Web. 25 September 2026. <https://smartdefine.org/leak-proof/thesaurus/synonyms>