Where does “tvíund” come from?

tvíund (Icelandic) comes from Icelandic tví-, from Indo-European *dwi-.

tvíund (Icelandic): second

Definitions

  1. second

Ancestry of “tvíund”, step by step

StepLanguageWordMeaning
1Icelandictví-two, double, binary
2Indo-European*dwi-—
Every word from Indo-European *dwi- →Every word from Icelandic tví- →
tvíund — Etymology, Origin & Word History | Etymology Explorer