Where does “mither-brither” come from?

mither-brither (Scots) comes from Scots mither, from Middle English moder, from Old English mōdor, from Old Frisian mōder, from Proto-Germanic mōdēr, from Proto-Indo-European méh₂tēr — mother.

mither-brither (Scots): maternal uncle

Definitions

  1. maternal uncle

Ancestry of “mither-brither”, step by step

mither-brither traces back through two separate lines of ancestry.

via Scots mither

StepLanguageWordMeaning
1Scotsmithermother
2Middle EnglishmoderA mother; the female direct ancestor of someone...
3Old Englishmōdormother
4Old Frisianmōder—
5Proto-Germanicmōdērmother
6Proto-Indo-Europeanméh₂tērmother

via Scots brither

StepLanguageWordMeaning
1Scotsbritherbrother
2Old Englishbrōþorbrother
3Proto-West Germanicbrōþerbrother
4Proto-Germanicbrōþērbrother
5Proto-Indo-Europeanbʰréh₂tērbrother
Every word from Proto-Indo-European méh₂tēr →Every word from Proto-Germanic mōdēr →Every word from Old Frisian mōder →