Tbh I've never heard of it myself before either. I saw it appearing on a list of synonyms for unfriendly in a dictionary and thought it was fitting for this specific purpose because it sounded close to office.Shouldn't it be "standoffish" rather than just "offish?" I don't think I've ever heard the term shortened like that before.
U know what’s also close to office?Tbh I've never heard of it myself before either. I saw it appearing on a list of synonyms for unfriendly in a dictionary and thought it was fitting for this specific purpose because it sounded close to office.
I killed it made perfect sense btw