casual (Adjective) — Marked by blithe unconcern. ex. "an ability to interest casual students" ex. "showed a casual disregard for cold weather"
casual (Adjective) — Without or seeming to be without plan or method; offhand. ex. "a casual remark" ex. "information collected by casual methods and in their spare time"
casual (Adjective) — Appropriate for ordinary or routine occasions. ex. "casual clothes"
casual (Adjective) — Occurring, appearing or singled out by chance. ex. "seek help from casual passers-by" ex. "a casual meeting"
casual (Adjective) — Hasty and without attention to detail; not thorough. ex. "a casual inspection failed to reveal the house's structural flaws"
casual (Adjective) — Not regular; working on an informal or ad hoc basis. ex. "casual employment" ex. "a casual correspondence with a former teacher"
casual (Adjective) — Characterized by a feeling of irresponsibility. ex. "a broken back is nothing to be casual about; it is no fooling matter"
casual (Adjective) — Natural and unstudied. ex. "using their Christian names in a casual way"
casual (Adjective) — Not showing effort or strain. ex. "a difficult feat performed with casual mastery"
casual (Noun) — A worker (especially in an office) hired on a temporary basis.