Where does “geil” come from?

geil (Old Dutch) comes from Proto-West Germanic gail, from Proto-Germanic gailaz, from Proto-Indo-European gʰoylos — frothing, arrogant, tempestuous, violent, wanton;...

Ancestry of “geil”, step by step

StepLanguageWordMeaning
1Proto-West Germanicgailwanton; lustful
2Proto-Germanicgailazmerry, excited, lush, beautiful, lustful
3Proto-Indo-Europeangʰoylosfrothing, arrogant, tempestuous, violent, wanton;...

Words derived from “geil

Every word from Proto-Indo-European gʰoylosEvery word from Proto-Germanic gailazEvery word from Proto-West Germanic gail