unintelligible

英 [ʌnɪn'telɪdʒɪb(ə)l] 美['ʌnɪn'tɛlədʒəbl]

• adj. 莫名其妙的；无法了解的

1. poorly articulated or enunciated, or drowned by noise;

"unintelligible speech"

2. not clearly understood or expressed