frivolous
US /ˈfrɪv.əl.əs/
UK /ˈfrɪv.əl.əs/

1.
2.
frywolny, beztroski
(of a person) carefree and not serious
:
•
She has a rather frivolous attitude towards life.
Ma raczej frywolne podejście do życia.
•
His frivolous nature often led him into trouble.
Jego frywolna natura często wpędzała go w kłopoty.