Origin of thick-skinned
Examples from the Web for thick-skinned
“Mouvedre is a thick-skinned late-harvested variety with sharp tannins that often seem rustic,” he says.
Only a very underbred, thick-skinned person would attempt it.Etiquette|Emily Post
The young people chafed, and, finding Billy Knapp either imperturbable or thick-skinned, they turned their attention to Alfred.Blazed Trail Stories|Stewart Edward White
He was thick-skinned and irrepressible, but Caldigate endeavoured to show his displeasure.John Caldigate|Anthony Trollope