the.com/incivility

means Behavior that is rude or disrespectful, especially the small, corrosive breaches of courtesy that erode public or political life.

from Traces to Latin incivilitas, built from in- ('not') plus civilis ('relating to citizens, courteous'), the same root that gives us 'civil' and 'city.' To be 'civil' was originally about fitness for citizenship and shared public life — so 'incivility' literally names a failure of the social contract, not just bad manners.