Where does “buy up” come from?

buy up (English) comes from English buy, from Middle English byen, from Old English bycġan, from Proto-West Germanic buggjan, from Proto-Germanic bugjaną, from Proto-Indo-European bʰewgʰ- — to bend; curve, arch.

buy up (English): To buy the whole of; to purchase the entire stock...

Definitions

  1. To buy the whole of; to purchase the entire stock...

Ancestry of “buy up”, step by step

buy up traces back through two separate lines of ancestry.

via English buy

StepLanguageWordMeaning
1EnglishbuyTo obtain in exchange for money or goods; To...
2Middle Englishbyento buy
3Old Englishbycġanto buy, pay for, acquire, redeem, ransom,...
4Proto-West Germanicbuggjanto buy
5Proto-Germanicbugjanąto deal; do business; exchange; to purchase; buy;...
6Proto-Indo-Europeanbʰewgʰ-to bend; curve, arch

via English up

StepLanguageWordMeaning
1EnglishupAway from the surface of the Earth or other...
2Middle Englishupto a vertical axis
3Old Englishuppup; upstairs
4Proto-West Germanic*upp
Every word from Proto-Indo-European bʰewgʰ-Every word from Proto-Germanic bugjanąEvery word from Proto-West Germanic buggjan
buy up — Etymology, Origin & Word History | Etymology Explorer