The phrase "gat one hair" refers to someone getting angry or losing their temper. There are several synonyms for this phrase that can be used interchangeably. Some examples include "flew off the handle," "blew a fuse," "had a meltdown," "lost it," "went ballistic," "had a fit," and "had a tantrum." All of these phrases imply an emotional outburst or a loss of self-control. It's always important to choose the appropriate synonym based on the context of the situation. Whether it's a personal or professional setting, using the right synonym can convey a specific message and help avoid misunderstandings.