calamitously is a form of:

Calamitous



adjective
1.
(to somebody / something) (making wretched, producing distress or misery, very miserable) ដែលមានវិបត្ដិភ័យ, ដែលមានទុក្ខភ័យ, ដែលមានភ័យដោយមានគ្រោះមហន្ដរាយ, ដែលមានទុក្ខសោក
ENGLISH MEANING
adjective
1.
Suffering calamity; wretched; miserable.
2.
Producing, or attended with distress and misery; making wretched; wretched; unhappy.