Where does “siok” come from?

siok (Old Dutch) comes from Proto-West Germanic seuk, from Proto-Germanic seukaz, from Proto-Indo-European seug- — to be troubled or grieved.

Ancestry of “siok”, step by step

StepLanguageWordMeaning
1Proto-West Germanicseuksick
2Proto-Germanicseukazsick
3Proto-Indo-Europeanseug-to be troubled or grieved
Every word from Proto-Indo-European seug- →Every word from Proto-Germanic seukaz →Every word from Proto-West Germanic seuk →