- poorly articulated or enunciated, or drowned by noise; "unintelligible speech"
- opaque: not clearly understood or expressed
- (unintelligibility) incoherence: nonsense that is simply incoherent and unintelligible
- not intelligible; unable to be understood
- (Unintelligibility) The degree or measure to which a person cannot be understood.
- Incapable of being understood.