serious
US /ˈsɪr.i.əs/
UK /ˈsɪr.i.əs/

1.
جدي, خطير
demanding or needing careful consideration or application
:
•
This is a serious matter that requires our full attention.
هذه مسألة خطيرة تتطلب اهتمامنا الكامل.
•
He made a serious effort to improve his grades.
بذل جهداً جدياً لتحسين درجاته.
2.