rudeness
n. B2 Upper Intermediate US //ˈɹudnəs// UK //ɹˈuːdnəs// rude·ness
n. the quality of being impolite or not showing respect for other people. It is the opposite of being kind or friendly.
n. the quality of being impolite or lacking in social manners. Often used to describe specific behaviors or the general character of a person's conduct.
His constant rudeness made it difficult to work with him.
The manager warned the staff that any further rudeness toward customers would result in immediate dismissal.
While some might view his bluntness as honesty, others found his lack of rudeness to be a significant barrier to professional collaboration.
From Middle English rudenesse, equivalent to rude + -ness.