casual

marked by blithe unconcern; "an ability to interest casual students"; "showed a casual disregard for cold weather"; "an utterly insouciant financial policy"; "an elegantly insouciant manner"; "drove his car with nonchalant abandon"; "was polite in a teasing nonchalant manner"

without or seeming to be without plan or method; offhand; "a casual remark"; "information collected by casual methods and in their spare time"

appropriate for ordinary or routine occasions; "casual clothes"; "everyday clothes"

occurring or appearing or singled out by chance; "seek help from casual passers-by"; "a casual meeting"; "a chance occurrence"

hasty and without attention to detail; not thorough; "a casual (or cursory) inspection failed to reveal the house's structural flaws"; "a passing glance"; "perfunctory courtesy"

characterized by a feeling of irresponsibility; "a broken back is nothing to be casual about; it is no fooling matter"

natural and unstudied; "using their Christian names in a casual way"; "lectured in a free-and-easy style"