CASUAL
—adjective. 1 accidental; chance. 2 not regular or permanent (casual work). 3 a unconcerned. B careless; unthinking. 4 (of clothes) informal. —none. 1 casual worker. 2 (usually. In plural.) Casual clothes or shoes. ? casually adverb. Casualness none. [french and latin: related to *case1]