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 has become very difficult 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 cumin, mint, and wine, 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 Proto-Indo-Iranian *mudra `seal' (Middle Iranian muhr, Sanskrit mudr?). Some even older, late neolithic, wanderwörter have been suggested, e.g. Sumerian balag, Akkadian pilaku-, or PIE pelek'u- 'axe'.

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