Where does “sống thử” come from?

sống thử (Vietnamese) comes from Vietnamese sống, from Proto-Vietic k-roːŋʔ, from Proto-Mon-Khmer ruŋʔ.

sống thử (Vietnamese): to cohabit

Definitions

  1. to cohabit

Ancestry of “sống thử”, step by step

sống thử traces back through two separate lines of ancestry.

via Vietnamese sống

StepLanguageWordMeaning
1Vietnamesesốnga spine; to live; living
2Proto-Vietick-roːŋʔback of the blade; alive; raw
3Proto-Mon-Khmerruŋʔ—

via Vietnamese thứ

StepLanguageWordMeaning
1Vietnamesethứinferior in quality, second, second vice, under;...
2Chinese首neck
3Proto-Sino-Tibetan*qV-luʔhead
Every word from Proto-Mon-Khmer ruŋʔ →Every word from Proto-Vietic k-roːŋʔ →Every word from Vietnamese sống →