Un-intelligibility refers to the state or condition of incomprehension or being unintelligible. There are various synonyms for the word un-intelligibility, including incoherence, confusion, vagueness, indistinctness, obscurity, opacity, impenetrability, ambiguity, and unintelligibleness. These words refer to the absence of clarity or the inability to understand something clearly. Incoherence refers to the lack of logical connection or consistency in thought or language. Vagueness and indistinctness suggest a lack of precision or clarity in communication. Ambiguity and obscurity imply uncertainty or confusion in meaning. Unintelligibleness refers to the difficulty or inability to understand something. These synonyms for un-intelligibility are useful in expressing the difficulty one may encounter in understanding certain concepts or ideas.