zhā
(onom.) chirp, twitter, etc
唧唧喳喳
jī jī zhā zhā
(onom.) chattering or giggling
喳喳
chā chā
(onom.) whisper
chā cha
to whisper
嘁嘁喳喳
qī qi chā chā
chattering
叽叽喳喳
(onom.) chirp