giseigo
Meaning words that mimic voices, it is a type of symbolic word used in the Japanese language to represent vocalizations. It is a subset of giongo. These words are used frequently along side gitaigo.
Examples:
ガーゴー / がーごー / gaagoo / the sound of snoring
グス / ぐす / gusu / the sound of light sobbing
ザワザワ / ざわざわ / zawazawa / the sound of a lively crowd
スザッ / すざっ / suza / a gasp
テヘ / てへ / tehe / a nervous giggle
モー / もー / moo / a cow's moo
ボソ / ぼそ / boso / the sound of muttering or whispering