Decoding Gen Z: 7 trending phrases it’s best to know now – Gatekeep

To “gatekeep” means to maintain one thing unique and never share it with others — like a secret recipe, a music artist, or a skincare product. If somebody says, “Don't gatekeep that lipstick shade,” they're asking you to share the small print. Typically it's used jokingly when somebody needs to maintain one thing all to themselves.