unintelligibly

1. He was mumbling to himself unintelligibly.
   他嘴里嘟嘟囔囔的，也不知道在说什么。
2. Missing is a power that can draws one's tears unintelligibly.
   思念就一种可以让人莫名其妙地掉下眼泪的力量。

adv

1. in an unintelligible manner
   1. the foreigners spoke unintelligibly

   Synonym:    ununderstandably