Webster’s Revised Unabridged Dictionary · 1913
Discourteous
Dis·cour′te·ous (?; see Courteous, 277), a. [Pref. dis- + courteous: cf. OF. discortois.] Uncivil; rude; wanting in courtesy or good manners; uncourteous. — Dis·cour′te·ous·ly, adv. — Dis·cour′te·ous·ness, n.