IPA: //ˌækrɪˈmoʊniəsli//
KK: /ˌækrɪˈmoʊniəsli/
In a way that is angry and bitter, often involving harsh words or feelings.
The debate ended acrimoniously, with both sides refusing to back down.
Acrimoniously → It is formed from "acer" (meaning sharp or bitter) and the suffix "-ous" (meaning full of), combined with the adverbial suffix "-ly". The word describes a manner that is full of bitterness or sharpness, often in speech or behavior.
Think of 'sharp' or 'bitter' ('acer') to remember that 'acrimoniously' means behaving in a sharp or bitter manner.