zé
(interj. of admiration or of disgust)
to click one's tongue; to attempt to (find an opportunity to) speak
人言啧啧
rén yán zé zé
everyone comments disapprovingly (idiom)
啧啧
zé zé
to click one's tongue
啧啧称奇
zé zé chēng qí
to click one's tongue in wonder (idiom)