casually
US /ˈkæʒ.uː.ə.li/
UK /ˈkæʒ.uː.ə.li/

1.
in a relaxed and informal way
:
•
He dressed casually for the picnic.
•
They chatted casually about their day.
2.
without serious intent; incidentally
:
•
He mentioned casually that he was leaving town.
•
She casually glanced at the clock.