Calling someone “callous” is a way of metaphorically suggesting a lack of feeling similar to that caused by calluses on the skin; but if you are speaking literally of the tough build-up on a person’s hand or foot, the word you need is “callused.”
This is the tenth year of the Common Errors in English Usage calendar. To celebrate, we are bringing back some of our favorite interesting, funny, but sometimes merely silly entries through the years before going on hiatus in 2016.
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