American Dictionary

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Definition impermeable in American English

impermeable adjective

adjective
/ɪmˈpɜrmiəb(ə)l/
1

something that is impermeable does not let liquid or gas pass through it

Synonyms and related words
2

if someone is impermeable, they don't care about other people's opinions, especially when people play jokes or laugh at their appearance, etc.

Example

It doesn't matter whether you became the object of ridicule, got into trouble, or someone simply wanted to offend you - your response always proves you are impermeable.

Definition impermeable in American English