Main entry: unintelligible
Definition: poorly articulated or enunciated, or drowned by noise
Usage: unintelligible speech
Antonyms: intelligible
Definition: well articulated or enunciated, and loud enough to be heard distinctly
Antonyms: thin
Definition: of relatively small extent from one surface to the opposite or in cross section
Antonyms: thin
Definition: relatively thin in consistency or low in density; not viscous
Main entry: opaque, unintelligible
Definition: not clearly understood or expressed
Antonyms: comprehendible, comprehensible
Definition: capable of being comprehended or understood