Where does “bat-batean” come from?

bat-batean (Basque) comes from Basque bat, from Proto-Basque bade — one, some.

bat-batean (Basque): suddenly

Definitions

  1. suddenly

Ancestry of “bat-batean”, step by step

bat-batean traces back through two separate lines of ancestry.

via Basque bat

StepLanguageWordMeaning
1Basquebata, an, some; one; some
2Proto-Basquebadeone, some

via Basque batean

StepLanguageWordMeaning
1Basquebateanat the same time
Every word from Proto-Basque bade →Every word from Basque bat →