Synonyms|180Antonyms|66|Broader|0Narrower|0Related|367
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model
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not shakable(expression, idiom)
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obdurate(unyielding, unbending, unreceptive)
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padlocked
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perfectly
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positive
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proofer
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reclosable(adjective, tight, proof, impervious, hermetic)
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reliable
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rigid(unyielding, unbending, unreceptive)
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rugged
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seal
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seals
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secured
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showerproof
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skintight
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sound
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steadfast
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stout
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sturdy
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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>