Where does “sku” come from?

sku (Norwegian Nynorsk) comes from Old Norse skulu, from Proto-Germanic skulaną, from Proto-Indo-European sḱel-, from Proto-Indo-European ḱelh₁- — to warm up, to be hot; to warm up, be hot.

sku (Norwegian Nynorsk): and skulle

Definitions

  1. and skulle

Ancestry of “sku”, step by step

StepLanguageWordMeaning
1Old Norseskulushall, must
2Proto-Germanicskulanąto owe; to be obliged to, have to; shall, will,...
3Proto-Indo-Europeansḱel-to be obligated, owe
4Proto-Indo-Europeanḱelh₁-to warm up, to be hot; to warm up, be hot
Every word from Proto-Indo-European ḱelh₁- →Every word from Proto-Indo-European sḱel- →Every word from Proto-Germanic skulaną →