I already know the term anaphora exists for repeating the same word for emphasis. I'm specifically interested in a term for repeating a word twice without additional clarification to express that something is especially strong or genuine.
"Do you like her, or do you like like her?"
"Are you making quick bread, or are you making bread bread?
"I'm so excited, I got a promotion promotion, with a pay raise and everything!"
I don't know that I've ever seen this in formal prose; it seems unique to spoken English, but if anyone knows of any written examples please add them. If no term already exists, I'd like to coin the term "duplication duplication," to distinguish it from ordinary duplication.