found: Washington Post express, Oct. 26, 2004:p. 2 ("In its latest effort to drive home good manners, Singapore will reward motorists for courteous behavior.")
found: Am. heritage dict.(courteous, adj.; courteousness, n.)
found: LC database, Oct. 26, 2004(titles: polite behavior)
found: 2016008767: Higgins, M. Belligerent broadcasting, 2016:CIP t.p. (Power, civility and confrontation on television) galley (belligerent broadcasting considered in parallel with discussions on the reconfiguration of manners and civil life; "doing rudeness")
found: Merriam Webster collegiate thesaurus online, June 16, 2016:courtesy (antonyms: discourteousness, discourtesy, impoliteness, rudeness, surliness, ungraciousness; synonyms: civility; graciousness)