onomatopoeia for unintelligible or low talking; often used in the compound 叽哩咕噜 jī​li​gū​lū

(bound form) filler syllable used in certain four-character descriptive words or sounds

Describes the sound of a quack, croak, or slap; also used in 呱呱 guā​guā for chatter or certain animal sounds.

(bound form) Representing the sound of singing or cheering