Dictionary entry

Discourtesy

Webster's Dictionary 1913

Dis‐cour″te‐sy (?), n. [Pref. dis- + courtesy: cf. OF. descourtoisie.] 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.