The story
- Proto-Indo-European*h₁ep-
- Proto-Indo-European*h₁éps
- Proto-Indo-European*h₁épi
- Proto-Indo-European*h₁pi
- Proto-Germanic*bi
- Proto-Germanic*bi-
- Proto-West Germanic*bi-
- Old Englishbe-
- Proto-Indo-European*(s)twerH-
- Proto-Indo-European*(s)twr̥H-yé-ti?
- Proto-Germanic*sturjaną
- Proto-West Germanic*sturjan
- Old Englishstyrian
- Old Englishbestyrian
- Middle Englishbestyrien
- English todaybestir
From Middle English bestyrien, bestirien, from Old English bestyrian (“to heap up, pile up”), equivalent to be- + stir.
Etymology from Wiktionary, CC BY-SA 4.0.