PTS Pali-English dictionary - The Pali Text Society's Pali-English dictionary
Vipaccatā
Vipaccatā,(f.) at Vin.II,88 is perhaps a der.fr.vi+vac,and not pac,thus representing a Sk.*vivācyatā,meȧning “challenging in disputation,” quarrelsomeness,provocation.See also vipāceti.If fr.vi+pac,the meaning would be something like “heatedness,exasperation.” (Page 626)
U Hau Sein’s Pāḷi-Myanmar Dictionary ပါဠိျမန္မာ အဘိဓာန္(ဦးဟုတ္စိန္)