Adjective

• 1. 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"

• 2. without or seeming to be without plan or method; offhand;

  "a casual remark"

  "information collected by casual methods and in their spare time"

• 3. suited for everyday use;

  "casual clothes"

  "everyday clothes"

• 4. occurring or appearing or singled out by chance;

  "their accidental meeting led to a renewal of their friendship"

  "seek help from casual passers-by"

  "a casual meeting"

  "a chance occurrence"

• 5. 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"

• 6. employed in a specified capacity from time to time;

  "casual employment"

  "a casual correspondence with a former teacher"

  "an occasional worker"

• 7. characterized by a feeling of irresponsibility;

  "a broken back is nothing to be casual about; it is no fooling matter"

• 8. natural and unstudied;

  "using their Christian names in a casual way"

  "lectured in a free-and-easy style"

• 9. not showing effort or strain;

  "a difficult feat performed with casual mastery"

  "careless grace"