Where does “bog” come from?

bog (Middle English) comes from Scottish Gaelic bogach, from Old Irish bog, from Proto-Celtic buggos, from Proto-Indo-European bʰewgʰ- — to bend; curve, arch.

Ancestry of “bog”, step by step

StepLanguageWordMeaning
1Scottish Gaelicbogachsoft, boggy ground
2Old Irishbogsoft
3Proto-Celticbuggossoft, tender
4Proto-Indo-Europeanbʰewgʰ-to bend; curve, arch

Words derived from “bog”

Every word from Proto-Indo-European bʰewgʰ- →Every word from Proto-Celtic buggos →Every word from Old Irish bog →