Where does “gnagen” come from?

gnagen (Middle English) comes from Old Norse gnaga, from Proto-Germanic gnaganą, from Proto-Indo-European gʰnēgʰ- — to gnaw, scratch.

Ancestry of “gnagen”, step by step

StepLanguageWordMeaning
1Old Norsegnagato gnaw
2Proto-Germanicgnaganąto gnaw
3Proto-Indo-Europeangʰnēgʰ-to gnaw, scratch
Every word from Proto-Indo-European gʰnēgʰ- →Every word from Proto-Germanic gnaganą →Every word from Old Norse gnaga →