Akademik

callous

adj. & n.
—adj.
1 unfeeling, insensitive.
2 (of skin) hardened or hard.
—n. = CALLUS 1.
Derivatives:
callously adv. (in sense
1 of adj.). callousness n.
Etymology: ME f. L callosus (as CALLUS) or F calleux

Useful english dictionary. 2012.