IPA: //ˌækrɪˈmoʊniəsnəs//
KK: /ˌækrɪˈmoʊniəsnəs/
The state of being angry, bitter, or harsh in speech or behavior, often due to resentment or disagreement.
The acrimoniousness of their debate left everyone feeling uncomfortable.
Acrimoniousness → It is formed from "acrimonious" (from Latin "acri-" meaning sharp or bitter, and "-ous" meaning full of) and the suffix "-ness" (meaning the state or quality of). The word describes the state of being full of sharpness or bitterness, particularly in speech or behavior.
Think of 'sharpness' ('acri-') and 'full of' ('-ous') to remember that 'acrimoniousness' refers to the quality of being full of bitterness or harshness.