A Wanderwort (plural Wanderwörter, German for "wandering word", ) is a word that was spread among numerous languages and cultures, usually in connection with trade, so that it becomes impossible to establish its original etymology, or even its original language. The separation of wanderwörter from loanwords is not unambiguously possible, and they may be considered a special class of loanwords. Typical examples of wanderwörter are sugar, ginger, cumin and tea, some of which can be traced back to Bronze Age Mediterranean trade.

Some ancient loanwords are connected with the spread of writing systems, an example would be Sumerian musar, Akkadian musarum 'document, seal', apparently loaned to Indo-Iranian *mudra `seal' (Middle Iranian muhr, Sanskrit mudrā). Some even older, late neolithic, wanderwörter have been suggested, e.g. Sumerian gu-, PIE gwou- 'cattle', or Sumerian balag, Akkadian pilaku-, PIE pelek'u- 'axe'.