Reborrowing is the process where a word travels from one language to another and then back to the originating language in a different form or with a different meaning. A reborrowed word is sometimes called a Rückwanderer (German, a 'returner').

The result is generally a doublet, where the reborrowed word exists alongside the original word, though in other cases the original word may have died out. Alternatively, a specific sense of a borrowed word can be reborrowed