adjective1. happening by accident or chance
a casual meeting
2. offhand; not premeditated
a casual remark
3. shallow or superficial
a casual affair
4. being or seeming unconcerned or apathetic
he assumed a casual attitude
5. (esp of dress) for informal wear
a casual coat
6. occasional or irregular
casual visits
a casual labourer
7. biology another term for adventive
noun8. (usually plural) an informal article of clothing or footwear
10. biology another term for an adventive
11. (usually plural) a young man dressed in expensive casual clothes who goes to football matches in order to start fights
Word origin
C14: from Late Latin
cāsuālis happening by chance, from Latin
cāsus event, from
cadere to fall; see
case1