weighty
US /ˈweɪ.t̬i/
UK /ˈweɪ.t̬i/

1.
2.
penting, serius
of great importance or seriousness
:
•
The committee discussed the most weighty issues facing the nation.
Komite membahas isu-isu paling penting yang dihadapi bangsa.
•
His words carried a weighty significance.
Kata-katanya memiliki makna yang penting.