Where does “dessel” come from?

dessel (Old Irish) comes from Old Irish dess, from Proto-Celtic dexswos, from Proto-Indo-European deḱswo-, from Proto-Indo-European deḱs- — right.

Ancestry of “dessel”, step by step

StepLanguageWordMeaning
1Old Irishdessright; south
2Proto-Celticdexswosright; south
3Proto-Indo-Europeandeḱswo-—
4Proto-Indo-Europeandeḱs-right

Words derived from “dessel”

Every word from Proto-Indo-European deḱs- →Every word from Proto-Indo-European deḱswo- →Every word from Proto-Celtic dexswos →