|Origin:||casuel, from Late Latin casualis, from Latin casus; CASE1|
relaxed and not worried, or seeming not to care about something:
a casual manner
His eyes were angry, though he sounded casual.
Marsha was quite casual about appearing on TV.
She had a casual attitude to life.
not formal or not for a formal situation [≠ formal]:
Jean felt more comfortable in casual clothes.
a casual jacket
employed as a temporary worker or working for only a short period of time:
staff employed on a casual basis
Chris has occasional casual work but mostly he is unemployed.
knowing someone or having sex with someone without wanting a close relationship with them [≠ serious]:
She will never be more than a casual acquaintance.
They had been conducting a casual affair for years.
John just wanted casual sex.
without any serious interest or attention:
He gave us a casual glance as he walked by, but didn't stop.
To the casual observer (=to someone who is not looking carefully) Mary seemed quite calm.
happening by chance without being planned:
not planned[only before noun]
a casual conversation
He made some casual remark (=one without thinking much about it) about her holiday.
doing something or using something sometimes but not regularly or often [= occasional]:
not regular[only before noun]
a casual drug user
The museum is of great interest, both to experts and to casual visitors.
a casually dressed young man
'Where do you work?' she asked casually.
He walked down the road, casually swinging his bag.
—casualness noun [uncountable]