mournfully is a form of:

Mournful



adjective
1.
(sorrowful, showing grief) ដែលស្រពាប់ស្រពោន
Example: the mournful sound of a dovemournful voice ដែលសោកសង្រេង, mournful occasion ដែលប្រកបទៅដោយទុក្ខព្រួយ
ENGLISH MEANING
adjective
1.
Full of sorrow; expressing, or intended to express, sorrow; mourning; grieving; sad; also, causing sorrow; saddening; grievous; as, a mournful person; mournful looks, tones, loss.