Akademik

unfeelingly
adverb
1. without compassionate feelings
-

unfeelingly, she required her maid to work on Christmas Day

Ant: ↑feelingly
Derived from adjective: ↑unfeeling
2. in a callous way
-

he callously exploited their feelings

Syn: ↑callously
Derived from adjective: ↑unfeeling, ↑callous (for: ↑callously)

Useful english dictionary. 2012.