Where does “aither” come from?

aither (Scots) comes from Middle English either, from Old English ǣġþer, from Old English ǣġhwæþer, from Proto-Germanic aiw — always, for ever.

aither (Scots): either

Definitions

  1. either

Ancestry of “aither”, step by step

StepLanguageWordMeaning
1Middle EnglisheitherBoth of two; Each of two; Either of two
2Old Englishǣġþer—
3Old Englishǣġhwæþer—
4Proto-Germanicaiwalways, for ever
Every word from Proto-Germanic aiw →Every word from Old English ǣġhwæþer →Every word from Old English ǣġþer →
aither — Etymology, Origin & Word History | Etymology Explorer