Synonyms|230Antonyms|32|Broader|3Narrower|0Related|172
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raincoat
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raincoats
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reclosable(adjective, tight, proof, impervious, hermetic)
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refractory(hard, solid, rigid)
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repellent
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restricted(adjective, close, solid, short, substantial)
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rigid(hard, solid, unyielding, unbending, unreceptive)
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rubberised
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seals
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secure
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secured
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set(hard, solid, rigid)
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showerproof
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sibylline
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slicker
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smoky
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snug
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soluble
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squashed(adjective, solid, dense, compressed)
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squeezed(adjective, solid, dense, compressed)
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APASmart Define. (2015). impermeable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/impermeable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impermeable thesaurus" https://smartdefine.org/impermeable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, impermeable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/impermeable/thesaurus/synonyms>.
MLASmart Define. "impermeable thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/impermeable/thesaurus/synonyms>