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impermeable

adjective

/ɪmˈpɜːmiəbl/

Meaning

Not allowing fluid or gas to pass through.

The container is made of impermeable plastic.

watertight, impenetrable, sealed, nonporous

permeable, porous, leaky

impermeable layer, impermeable membrane, impermeable barrier, impermeable wall

Belonging naturally; essential. Existing as a natural or basic part of something.

Formal and dignified; characterized by deep sincerity.

little in size; not large; limited in extent or amount

the number equivalent to 12

Exactly the same in every detail.

having a bad taste or smell due to being old or spoiled (especially fats or oils)