irrespirable

Etymology
Either:


 * from ; or
 * borrowed from, from , from (a variant of ) +  + .  is the    of , from  +  (ultimately from ).

Adjective

 * 1) Not respirable; not suitable for breathing; unbreathable.

Etymology
From, from (a variant of ) +  +. is the   of, from  +  (ultimately from ). The French word is analysable as.

Adjective

 * 1) unbreathable, suffocating