Thesaurus
Synonyms & Antonyms of impermeable
1
impossible to get through or into
- the wall of security people surrounding the rock band was impermeable
Synonyms for impermeable
- impassable
- (also impassible),
- impenetrable,
- impervious,
- impregnable
Words Related to impermeable
Near Antonyms for impermeable
Antonyms for impermeable
2
not allowing penetration (as by gas, liquid, or light)
- an impermeable seal on the ancient tomb had preserved the artifacts exceptionally well
Synonyms for impermeable
Words Related to impermeable
- airtight,
- hermetic
- (also hermetical),
- leakproof,
- watertight
Near Antonyms for impermeable
Antonyms for impermeable
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Merriam-Webster unabridged
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Time Traveler for impermeable
The first known use of impermeable was in 1661
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