Where does “bámhar” come from?

bámhar (Irish) comes from Irish -mhar, from Old Irish -mar, from Old Irish már, from Proto-Celtic māros, from Proto-Indo-European moh₁ros, from Proto-Indo-European meh₁- — to measure.

Ancestry of “bámhar”, step by step

StepLanguageWordMeaning
1Irish-mhar-y
2Old Irish-margenerates adjectives from nouns
3Old IrishmárAlternative form of mór; great
4Proto-Celticmārosbig, great
5Proto-Indo-Europeanmoh₁rosgreat
6Proto-Indo-Europeanmeh₁-to measure
Every word from Proto-Indo-European meh₁- →Every word from Proto-Indo-European moh₁ros →Every word from Proto-Celtic māros →