As adverbs the difference between humanely and callously
is that humanely is in a humane way while callously is in a callous manner; done without regard to others' sensitivities.
callously
English
Adverb
(
en adverb)
In a callous manner; done without regard to others' sensitivities.
Synonyms
*(in a callous manner ): carelessly, hardheartedly, indifferently, unfeelingly