unbreathable
English
    
    Etymology
    
From un- + breathable.
Adjective
    
unbreathable (comparative more unbreathable, superlative most unbreathable)
- Not suitable for breathing.
- Synonym: irrespirable
- The atmosphere on Venus is an unbreathable mixture of carbon dioxide and sulphuric acid, amongst other things.
 - 2020, Avni Doshi, Burnt Sugar, Hamish Hamilton, page 19:- The air was not just thick, it was unbreathable.
 
 
- Not letting air seep through.
- an unbreathable fabric
 
Translations
    
not suitable for breathing
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not letting air seep through
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