Contrastive focus reduplication
Contrastive focus reduplication, also called contrastive reduplication, identical constituent compounding, lexical cloning, or the double construction, is a type of syntactic reduplication found in some languages. Doubling a word or phrase – such as "do you like-like him? " – can indicate that the prototypical meaning of the repeated word or phrase is intended.
Source: Wikipedia — Contrastive focus reduplication (CC BY-SA 4.0)