Unintelligible language is impossible to understand, for example because it is not written or pronounced clearly, or because its meaning is confused or complicated.
例句
He muttered something unintelligible...他嘴里不知咕噥了幾句什么。I did my best to join in, but the conversation was largely unintelligible.我努力想插上話，可是大部分談話內(nèi)容我都聽不懂。
英英詞典釋義
Adjective
1. poorly articulated or enunciated, or drowned by noise;