Where does “швыдкїй” come from?

швыдкїй (Old East Slavic) comes from Polish szwytki, from Middle Low German swît, from Old Saxon swīth, from Proto-West Germanic swinþ, from Proto-Germanic swinþaz, from Proto-Indo-European swent- — vigorous, active, healthy; active, healthy.

Ancestry of “швыдкїй”, step by step

StepLanguageWordMeaning
1Polishszwytki—
2Middle Low Germanswît—
3Old Saxonswīth—
4Proto-West Germanicswinþstrong
5Proto-Germanicswinþazstrong
6Proto-Indo-Europeanswent-vigorous, active, healthy; active, healthy
Every word from Proto-Indo-European swent- →Every word from Proto-Germanic swinþaz →Every word from Proto-West Germanic swinþ →