doubtful
US /ˈdaʊt.fəl/
UK /ˈdaʊt.fəl/

1.
ragu-ragu, tidak pasti
feeling uncertain about something
:
•
I'm doubtful about his ability to finish the project on time.
Saya ragu-ragu tentang kemampuannya untuk menyiapkan projek tepat pada masanya.
•
She gave a doubtful look when he explained his plan.
Dia memberikan pandangan ragu-ragu apabila dia menjelaskan rancangannya.
2.
diragui, tidak mungkin
unlikely to be true or to happen
:
•
It's doubtful that they will agree to our terms.
Diragui bahawa mereka akan bersetuju dengan syarat-syarat kami.
•
The success of the mission remains doubtful.
Kejayaan misi masih diragui.