The Grimacing Face, or also known as the Teeth emoji ????, has a yellow face with open eyes showing gripped teeth. It may signal distress, disapproval, and other negative emotions. It first appeared in 2012 as part of the Unicode 6.1 and was added in Emoji 1.0 after five years.
You can use the Grimacing Face Emoji Copy and Paste ???? to show your strong negative feeling with someone or something or if you are feeling nervous because of a wide array of reasons like speaking in front of the public or confessing your admiration to someone.