The story
- Proto-Indo-European · derived from*tūk-“to beat”
- Proto-Germanic · derived from*þūhaną
- Proto-Germanic · inherited from*þuddijaną
- Old English · inherited fromþyddan“to strike, press, thrust”
- Middle English · inherited fromthudden“to strike with a weapon”
- English todaythud
From Middle English thudden (“to strike with a weapon”), from Old English þyddan (“to strike, press, thrust”), from Proto-Germanic *þuddijaną, *þiudijaną (“to strike, thrust”), from Proto-Germanic *þūhaną, *þeuhaną (“to press”), from Proto-Indo-European *tūk- (“to beat”). Cognate with Old English þoddettan (“to strike, push, batter”), Old English þȳdan (“to strike, stab, thrust, press”), Old English þēowan (“to press”), Albanian thundër (“a hoof, talon, a shaft", figuratively, "oppression, torment”).
Etymology from Wiktionary, CC BY-SA 4.0.