Definition of "callous" []

• Having calluses; toughened: callous skin on the elbow. (adjective)
• Emotionally hardened; unfeeling: a callous indifference to the suffering of others. (adjective)
• To make or become callous. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "State Department spokesman Mark Toner says Gbagbo's continued efforts to force a result that he could not obtain at the ballot box show what he calls a "callous disregard for the welfare of the Ivorian people, who will again suffer amid renewed heavy fighting in Abidjan.""
• "The summit also strongly condemned what it called a callous attack on the United Nations refugee camp at Gatumba on Friday in which about 160 people were killed."
• "The South African Society of Journalists on Thursday condemned what it described as the callous attitude of the Argus Company in offering its Sunday Star staff one of "the worst termination packages seen in the industry in years"."