응얼응얼하다

Meaning

1. 1.

   murmur — To continuously read or sing in an indistinct voice.

2. 2.

   murmur; mumble; mutter — To continuously say something so indistinctly as to be hardly heard by others.

3. 3.

   grumble — To say one's complaints to oneself in an indistinct voice.

Conjugations