Where does “bắt tay” come from?

bắt tay (Vietnamese) comes from Vietnamese Tây, from Chinese 西, from English West, from Middle English west, from Old English west, from Proto-West Germanic *westr, from Proto-Germanic westrą, from Proto-Germanic westraz.

bắt tay (Vietnamese): to shake hands

Definitions

  1. to shake hands

Ancestry of “bắt tay”, step by step

bắt tay traces back through two separate lines of ancestry.

via Vietnamese Tây

StepLanguageWordMeaning
1VietnameseTâyAlternative letter-case form of tây
2Chinese西
3EnglishWestAny of various particular regions named for the cardinal direction in which they lie
4Middle Englishwestwest; A location to the south; the south; The...
5Old Englishwestwest
6Proto-West Germanic*westrwestern, westernly
7Proto-Germanicwestrąwest; west, westward
8Proto-Germanicwestrazwest, western
9Proto-Indo-Europeanwek(ʷ)sperosevening
10Proto-Indo-Europeanwe-

via Vietnamese bắt

StepLanguageWordMeaning
1Vietnamesebắtto seize; to catch
2Proto-Vietic*pəc
Every word from Proto-Indo-European we-Every word from Proto-Indo-European wek(ʷ)sperosEvery word from Proto-Germanic westraz