Impermeable

//ɪmˈpɜːmɪəbəl// adj

adj ·Uncommon ·College level

Definitions

Adjective
  1. 1
    Impossible to permeate.
  2. 2
    Not allowing passage, especially of liquids; waterproof.
Adjective
  1. 1
    preventing especially liquids to pass or diffuse through wordnet

Synonyms

All synonyms
sealedanestheticcloseclose-knitclose-texturedclose-woven

Example

More examples

"This fabric is impermeable to water."

Etymology

Apparently from im- + permeable. Compare French imperméable, from Latin impermeābilis, from im- + permeābilis (“permeable”).

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.