callous

1. (figurative) Emotionally hardened; unfeeling and indifferent to the suffering/feelings of others.Examples: "She was so callous that she could criticise a cancer patient for wearing a wig."; "Re-watching some of the audition rounds of these shows now, you're struck by how callous the judges' comments often were, and how they presented a cruel spectacle in which the audience were set up to laugh at the "deluded" members of the public who believed they could sing."Synonyms: heartless, insensitive, callous, cold, cold-eyed, dour, flint-hearted, forbiddingfiguratively

2. (literal) Having calluses, or relating to calluses.Synonyms: callousy, callusy, calloused, callused