unintelligibly

he spoke unintelligibly during the meeting.

the instructions were written unintelligibly.

she mumbled unintelligibly when asked a question.

his explanation was unintelligibly complex.

the child spoke unintelligibly due to excitement.

they communicated unintelligibly in their own language.

she laughed unintelligibly, making everyone curious.

he often speaks unintelligibly when nervous.

the radio was playing unintelligibly in the background.

the professor's lecture was unintelligibly fast.