thick-skinned(redirected from grow thick-skinned)
Fig. not easily upset or hurt; insensitive. (The opposite of thin-skinned. Typically: be ~; become ~; grow ~.) Tom won't worry about your insults. He's completely thick-skinned. Jane's so thick-skinned she didn't realize Fred was being rude to her.
mod. able to withstand much criticism. (Compare this with thin-skinned.) You gotta be more thick-skinned if you want to be a cop.