callous

[ kal-uhs ]
/ ˈkæl əs /

adjective

made hard; hardened.
insensitive; indifferent; unsympathetic: They have a callous attitude toward the sufferings of others.
having a callus; indurated, as parts of the skin exposed to friction.

verb (used with or without object)

to make or become hard or callous.

Origin of callous

1375–1425; late Middle English < Latin callōsus hard-skinned, tough, equivalent to call(um) tough skin, any hard substance + -ōsus -ous

OTHER WORDS FROM callous

WORDS THAT MAY BE CONFUSED WITH callous

callous callus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for callousness

British Dictionary definitions for callousness

callous
/ (ˈkæləs) /

adjective

unfeeling; insensitive
(of skin) hardened and thickened

verb

pathol to make or become callous

Derived forms of callous

callously, adverbcallousness, noun

Word Origin for callous

C16: from Latin callōsus; see callus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for callousness

callous
[ kăləs ]

adj.

Of, relating to, or characteristic of a callus or callosity.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.