Where does “shreden” come from?

shreden (Middle English) comes from Old English sċrēadian, from Proto-West Germanic skraudōn, from Proto-Germanic skraudaną, from Proto-Indo-European skrówdʰ-e-ti, from Proto-Indo-European skrew-, from Proto-Indo-European (s)ker-, from Proto-Indo-European sek- — to cut, cut off, sever.

Ancestry of “shreden”, step by step

StepLanguageWordMeaning
1Old Englishsċrēadianto shred, cut up, cut off, prune
2Proto-West Germanicskraudōn
3Proto-Germanicskraudanąto cut up, to shred
4Proto-Indo-Europeanskrówdʰ-e-ti
5Proto-Indo-Europeanskrew-to cut; cutting tool
6Proto-Indo-European(s)ker-to cut off; to turn, bend
7Proto-Indo-Europeansek-to cut, cut off, sever
Every word from Proto-Indo-European sek-Every word from Proto-Indo-European (s)ker-Every word from Proto-Indo-European skrew-