Synonyms|127Antonyms|46|Broader|0Narrower|1Related|724
5
impenetrable(adjective, dense)
4
airtight(adjective, sealed)
3
water-resistant
2
impassable
2
impervious
2
solid
2
retentive
2
waterproof
2
watertight
1
impermeable
1
close
1
compact
1
water-repellent
1
callous
1
cold
1
nonporous
1
rainproof
1
reclosable(adjective, open, spoil, unsealed, nonhermetic)
1
tight
1
unpermeable
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APASmart Define. (2015). permeable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/permeable/thesaurus/antonyms
ChicagoSmart Define. 2015. "permeable thesaurus" https://smartdefine.org/permeable/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2015, permeable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/permeable/thesaurus/antonyms>.
MLASmart Define. "permeable thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/permeable/thesaurus/antonyms>