Cruelly
From BiblePortal Wikipedia
King James Dictionary [1]
Cruelly, adv.
1. In a cruel manner with cruelty inhumanly barbarously.
Because he cruelly oppressed, he shall die in his iniquity. Ezekiel 18 .
2. Painfully with severe pain, or torture as, an instrument may cut the flesh most cruelly.
Webster's Dictionary [2]
(1): (adv.) Extremely; very.
(2): (adv.) In a cruel manner.