Where does “deargaigh” come from?

deargaigh (Irish) comes from Irish dearg, from Old Irish derg, from Proto-Celtic dergos, from Proto-Indo-European dʰerg-, from Proto-Indo-European dʰer- — to support; to hold.

Ancestry of “deargaigh”, step by step

StepLanguageWordMeaning
1Irishdeargred; live; to redden
2Old Irishdergred
3Proto-Celticdergosred crimson
4Proto-Indo-Europeandʰerg-to dim, darken; dim, dull; dark, dusky
5Proto-Indo-Europeandʰer-to support; to hold
Every word from Proto-Indo-European dʰer- →Every word from Proto-Indo-European dʰerg- →Every word from Proto-Celtic dergos →