unbreathable. ( Of the lat. irrespirabLIS ). adj. That you can not breathe. Suffocating gas. || 2 That you can hardly breathe. Air, unbreathable atmosphere. || 3 Saying of a social environment: that is intolerable, or inspires great disgust.Microsoft ® Encarta ® 2006. © 1993-2005 Microsoft Corporation. All rights reserved.
