No matter how callously defined, neither America's interests -- nor the world's -- are served by the denial of human aspirations.
It makes me ill how callously people talk about ripping their clients off.
And in places where fundamentalism is most severe, women are callously repressed.
c.1400, "hardened," in the physical sense, from Latin callosus "thick-skinned," from callus, callum "hard skin" (see callus). The figurative sense of "unfeeling" appeared in English by 1670s. Related: Callously; callousness.
callous cal·lous (kāl'əs)
Of, relating to, or characteristic of a callus or callosity.