thick–skinned 
/ˈθɪkˌskɪnd/ adjective
/ˈθɪkˌskɪnd/ adjective [more thick–skinned; most thick–skinned] 1 : having a thick skin
▪ a thick-skinned orange 2 : not easily bothered by criticism or insults : not sensitive
▪ You need to be thick-skinned if you are going to work in politics. — opposite thin-skinned
▪ a thick-skinned orange
▪ You need to be thick-skinned if you are going to work in politics. — opposite thin-skinned
