discourtesy Meaning, Definition & Usage

  1. noun an expression of lack of respect
    disrespect.
  2. noun a manner that is rude and insulting
    rudeness.
  3. noun a lack of politeness; a failure to show regard for others; wounding the feelings or others
    offense; offensive activity; offence.

WordNet

Dis*cour"te*sy noun
Etymology
Pref. dis- + courtesy: cf. OF. descourtoisie.
Definitions
  1. Rudeness of behavior or language; ill manners; manifestation of disrespect; incivility.
    Be calm in arguing; for fierceness makes Error a fault, and truth discourtesy. Herbert.

Webster 1913