• WordNet 3.6
    • adj callous emotionally hardened "a callous indifference to suffering","cold-blooded and indurate to public opinion"
    • adj callous having calluses; having skin made tough and thick through wear "calloused skin","with a workman's callous hands"
    • v callous make insensitive or callous; deaden feelings or morals
    • ***
Webster's Revised Unabridged Dictionary
    • Callous Hardened in mind; insensible; unfeeling; unsusceptible. "The callous diplomatist.""It is an immense blessing to be perfectly callous to ridicule.""A callousness and numbness of soul."
    • Callous Hardened; indurated. "A callous hand.""A callous ulcer."
    • ***
Century Dictionary and Cyclopedia
    • callous Hard; hardened; indurated, as an ulcer, or the skin on some part of the body from exposure to continuous pressure or friction: as, “a callous cicatrice,” ; “a callous ulcer,”
    • callous Hardened in mind or feelings; insensible; unfeeling: as, “the callous diplomatist,”
    • callous In entomology, swollen and smooth: as, a callous margin, one very thick and irregularly rounded or lumpy. Synonyms Hardened, etc. (see obdurate), unsusceptible, unimpressilbe, indifferent, deaf, dead, etc.
    • callous To harden or make callous.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Callous kal′us hardened: unfeeling or insensible
    • ***


Webster's Revised Unabridged Dictionary
L. callosus, callous hard, fr. callum, callus, callous skin: cf. F. calleux,
Chambers's Twentieth Century Dictionary
L. callosuscallus, hard skin.


In literature:

Some praised his courage, others criticized his callousness.
"Library of the World's Best Literature, Ancient and Modern, Vol. 1"
They were shapely enough hands, even if red and calloused.
"The Purple Heights" by Marie Conway Oemler
I never heard of such callousness.
"The Roll-Call" by Arnold Bennett
A harsh, callous philosophy.
"The Pretty Lady" by Arnold E. Bennett
I was almost quite callous about that.
"The Matador of the Five Towns and Other Stories" by Arnold Bennett
There are several reasons why photoplay corporations are callous, along with the sufficient one that they are corporations.
"The Art Of The Moving Picture" by Vachel Lindsay
His callousness was so unaffected that she shivered a little.
"The Great Prince Shan" by E. Phillips Oppenheim
But how callous and unsympathetic she was.
"Evelyn Innes" by George Moore
Even the selfish, callous Abbe would regret that she was the one to go.
"The Light That Lures" by Percy Brebner
Thus arose a "sport" which is educating many, many thousands in callousness and brutality.
"The Ethics of Drink and Other Social Questions" by James Runciman

In poetry:

The little street wenches,
the callous, unclean
—Could they but tell us what
all the gods mean.
"In the Dim Counties" by John Shaw Neilson
The rarest treasures of yer 'eart yeh spend
On callous, thankless coots; an' in the end
It comes to this: if you can't find a muse
'Oo takes in washin', wot's the flamin' use?
"A Guide for Poits" by C J Dennis
Then, piteously outstretching calloused hands,
He sank upon his knees, his huge gnarled knees,
And echoed, falteringly, with slow harsh tongue,—
Perchance, perchance, the Maker of you all.
"Enceladus" by Alfred Noyes
Alas for trouble and care and sin,
And bitterness, hate, and strife!
That the heart grows cold and callous within,
As stoned by the hail and stunn'd by the din
Of the storm-driven desert of life.
"Paradise Lost" by Martin Farquhar Tupper
The greater the plagues were, which hung o'er each head,
Storm, war, or disease, or a scarceness of bread,
More hard'ned and callous, like Pharaoh, we were,
And forc'd thee to vex us with judgements severe.
"Another, On The Same Occasion" by Rees Prichard
Long, long have they pass'd—faces and trenches and fields;
Where through the carnage I moved with a callous composure—or away
from the fallen,
Onward I sped at the time—But now of their forms at night,
I dream, I dream, I dream.
"In Midnight Sleep" by Walt Whitman

In news:

Rush Limbaugh has, through the years, said several callous things about the NBA, most of which I happily know nothing about.
Facebook chief exec and co-founder Mark Zuckerberg was painted as a callous and conniving computer geek in this weekend's No.
A callous US Open umpire talked cops' ears off about the tennis legends whose matches she had worked — virtually ignoring her husband lying dead when detectives arrived at her home, sources said yesterday.
Yad Vashem chairman Avner Shalev tells CBS News he is "shocked and dazed by this callous expression of burning hatred against the Zionists and Zionism ".
So when he called the Giants' latest spate of turnovers "a callous disregard for the football," he hit his sliding 6-4 team's problems squarely on the head.
Because As Cold and Callous As This Town Can Be, We Can Still Fall in Love With a Teddy Bear .
We got ours absolutely nothing, but that's how we roll: cheap and callous.
Skin darkened by the sun, the occasional cigarette can be seen smoking between his calloused fingers.
I watched "The Incredible Dr Pol" and enjoyed his colorful personality, but I'm concerned by what appear to be lax standards and callous treatment of some of his dog and cat patients.
I would say that those who are callous about babies and callous about life ought to be brought to bear the callousness of their indifference.
Because As Cold and Callous As This Town Can Be, We Can Still Fall in Love With a Teddy Bear.
Arnold Slater, of Greenwich Village, was crossing Broadway at W 114th St when the callous driver clipped him about 11:55 pm Friday, police said.
George Zimmerman's callous ' hoodie ' comment.
"There are all these new books out there portraying Asian mothers as scheming, callous, overdriven people indifferent to their kids' true interests," Amy Chua writes.
If family feuds, storied pranks, Highway 7 and tradition aren't enough, there's a good football team for the calloused and a quarterback for the curious participating in the Battle of the Ravine on Saturday.