I had a whole long post written out, and I've decided to delete it to avoid offending anyone. My relationship with my family is "complicated". I almost wouldn't post the question at all, but I really am interested.

So just what the title says.

I consider immediate family to be your parents and siblings, though you could also count parents and siblings of your SO (I do). Extended family would be everything else- so your nieces, nephews, cousins, whatever.