In British English, a git is a rude name for someone you find unpleasant and annoying — most often a man. People say it when they are angry or making a sharp joke: “Don’t be a git.” It is insulting, but milder than the strongest swear words; still, it is not a word for class, and it can really hurt. American speakers mostly do not use it this way. Though actually the same spelling, usually with a capital G, is also the name of a computer tool for saving versions of code. That is a different word, chosen because it is short and easy to say — not because of this insult.

討厭的傢伙、討人厭的人（英式口語罵人，多指男性）