Unintelligible
/ˌənˌɪnˈtɛl.ɪ.dʒə.bəl/
Synonyms
- ambiguous
- difficult
- incomprehensible
- opaque
- indecipherable
Slang Meanings
Difficult to follow or grasp
That lecture was so unintelligible, I have no idea what the professor was saying.
Mumbling or garbled speech
After a few drinks, his words became totally unintelligible.