Buck, C., D. (1949). A dictionary of selected synonyms in the principal Indo–European languages: a contribution to the history of ideas. Chicago: University of Chicago Press.
Guus Kroonen. Etymological Dictionary of Proto-Germanic. Indo-European Etymological Dictionaries Online. Edited by Alexander Lubotsky. Brill. Brill Online.
Simpson, J., & Weiner, E. S. 1989. Oxford English dictionary. Oxford: Clarendon Press.
Robert Farren, PIE culture words collection, 2017
AHI47, AHI49, AHI51, AHI181
Any ancestors and descendants of the selected element are shown in the graph, but siblings and cousins are not.
The element in question is marked in green.
When the etymological tree is displayed in hierarchical style, the nodes can be repositioned manually only within their level.
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Left-click on a node or edge to show additional information and links. In some browsers, the graph may be savable as an image when right-clicking on it.
This map shows the etymological links in a geographic context.