"marked by ill-tempered contradiction or opposition," 1772, said by Grose to be "a Wiltshire word," conjectured to be from an alteration (influenced perhaps by raucous) of a dialectal survival of Middle English contakour "troublemaker" (c. 1300), from Anglo-French contec "discord, strife," from Old French contechier (Old North French contekier), from con- "with" + teche, related to atachier "hold fast" (see attach). With -ous. Related: Cantankerously; cantankerousness.
