<p><strong>Adjective</strong></p><ul><li>happening by chance; fortuitous: a casual meeting.</li><li>Synonyms: incidental, unexpected.</li><li>Antonyms: planned.</li><li>without definite or serious intention; careless or offhand; passing: a casual remark.</li><li>appropriate for wear or use on informal occasions; not dressy: casual clothes; casual wear.</li><li>seeming or tending to be indifferent to what is happening; relaxed; nonchalant: a casual, unconcerned air.</li><li>without emotional intimacy or commitment: casual sex.</li><li>irregular; occasional: a casual visitor.</li><li>Synonyms: unpredictable, unconcerned, indifferent, apathetic, unceremonious, informal.</li><li>Antonyms: serious, formal, concerned.</li><li>accidental: a casual mishap.</li><li>noting or relating to activities that do not require much skill or time commitment: casual gamers.</li><li>Obsolete: uncertain.</li></ul><p><strong>Noun</strong></p><ul><li>a worker employed only irregularly.</li><li>a soldier temporarily at a station or other place of duty, and usually en route to another station.</li><li>usually casuals.</li><li>an article of clothing for casual wear.</li><li>a person who does something only occasionally: Most of our customers are casuals.</li><li>usually disparaging: a person who plays video games that do not require much skill or time commitment.</li></ul>