have a thick skin

have a thick skin

1. To have the ability to ignore verbal attacks or criticism from others. If you're going to pursue a career in politics, you need to have a thick skin so that the criticism of your detractors doesn't bother you.
2. To be unaware of or indifferent to other people's needs or interests. Ethel has a thick skin, so I'm not surprised she didn't see how unhappy you were.
See also: have, skin, thick
Farlex Dictionary of Idioms.

have a thick (or thin) skin

be insensitive (or oversensitive) to criticism or insults.
See also: have, skin, thick
Farlex Partner Idioms Dictionary

have a thick skin

1. To be slow to take offense.
2. To be insensitive to the needs or concerns of others.
See also: have, skin, thick
American Heritage® Dictionary of the English Language, Fifth Edition.

thick skin, to have a

To be insensitive to shame, reproof, slander, or criticism. The transfer of a tough epidermis to mental toughness is ancient, appearing in the writings of the Roman orator Cicero, among others. Carlyle wrote in Frederick the Great (1858), “Voltaire was a fool not to have thicker skin.” The opposite is meant by having a thin skin—that is, being hypersensitive to reproof or criticism, or being easily hurt. This usage dates from the late 1600s.
See also: have, thick
The Dictionary of Clichés by Christine Ammer
See also:
  • thick skin, to have a
  • have a skin like a rhinoceros
  • rhinoceros
  • have a hide like a rhinoceros
  • have a hide/skin like a rhinoceros
  • a thick skin
  • a thick/thin skin
  • thick skin
  • thick-skinned
  • thin-skinned