Where does “rattsurfning” come from?

rattsurfning (Swedish) comes from Swedish rattsurfa, from Swedish rätt, from Middle Low German rât, from Old Saxon rāt, from Proto-West Germanic rād, from Proto-Germanic rēdaz, from Proto-Indo-European Hréh₁dʰos, from Proto-Indo-European Hreh₁dʰ- — to fit, to fix, to put together.

Ancestry of “rattsurfning”, step by step

rattsurfning traces back through two separate lines of ancestry.

via Swedish rattsurfa

StepLanguageWordMeaning
1Swedishrattsurfato use a mobile phone (generally a smartphone) while driving
2Swedishrättright, correct; rightly, correctly; rather,...
3Middle Low Germanrât
4Old Saxonrāt
5Proto-West Germanicrādadvice, counsel
6Proto-Germanicrēdazadvice, counsel
7Proto-Indo-EuropeanHréh₁dʰos
8Proto-Indo-EuropeanHreh₁dʰ-to think; to arrange; to succeed, accomplish
9Proto-Indo-Europeanh₂reh₁-to think, reason; to arrange
10Proto-Indo-Europeanh₂er-to fit, to fix, to put together

via Swedish ning

StepLanguageWordMeaning
1Swedishning
Every word from Proto-Indo-European h₂er-Every word from Proto-Indo-European h₂reh₁-Every word from Proto-Indo-European Hreh₁dʰ-