Where does this definition of be callous to come from?
This entry for be callous to is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is be callous to a noun, verb, or something else?
In this entry, be callous to is tagged as 2v..
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.