Synonyms|14Antonyms|3|Broader|0Narrower|0Related|18
2
impenetrably
2
imperviously
2
tightly
2
waterproofly
2
watertightly
1
costively
1
hermetically
1
proofly
0
closely
0
coldly
0
compactly
0
firmly
0
formally
0
solidly
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APASmart Define. (2013). impermeably thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/impermeably/thesaurus/synonyms
ChicagoSmart Define. 2013. "impermeably thesaurus" https://smartdefine.org/impermeably/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2013, impermeably thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/impermeably/thesaurus/synonyms>.
MLASmart Define. "impermeably thesaurus" 19 May 2013. Web. 20 September 2026. <https://smartdefine.org/impermeably/thesaurus/synonyms>