> as in lunatic a person who lacks good sense or judgment
Not marked as rude or profane.
> a person, especially a man, who is stupid or unpleasant
Or [1]:
> If you refer to another person as a git, you mean you dislike them and find them annoying. [British, offensive, disapproval]
[0] https://dictionary.cambridge.org/us/dictionary/english/git
[1] https://www.collinsdictionary.com/us/dictionary/english/git