Where does “lằn ranh đỏ” come from?

lằn ranh đỏ (Vietnamese) comes from Vietnamese đỏ, from French dose, from Latin dosis, from Ancient Greek δόσις, from Ancient Greek δίδωμι, from Proto-Indo-European dédeh₃ti, from Proto-Indo-European deh₃- — to give.

lằn ranh đỏ (Vietnamese): red line

Definitions

  1. red line

Ancestry of “lằn ranh đỏ”, step by step

lằn ranh đỏ traces back through two separate lines of ancestry.

via Vietnamese đỏ

StepLanguageWordMeaning
1Vietnameseđỏred; burning; flaring up; lucky; fortunate
2Frenchdoseproportion; dose; first-person singular present...
3Latindosisdose
4Ancient Greekδόσιςgiving, a gift; license, permission; portion
5Ancient GreekδίδωμιI give, present, offer; I grant, allow, permit;...
6Proto-Indo-Europeandédeh₃tito be giving
7Proto-Indo-Europeandeh₃-to give

via Vietnamese lằn ranh

StepLanguageWordMeaning
1Vietnameselằn ranhborder; dividing line
2Vietnameselặnto dive; to hide; to set
3EnglishlaneA road, street, or similar thoroughfare; A narrow...
4Middle Englishlanelane, alley narrow passage between buildings
5Old Englishlanelane, narrow path
6Proto-West Germaniclanulane, passageway
7Proto-Germaniclanōlane, passageway
Every word from Proto-Indo-European deh₃-Every word from Proto-Indo-European dédeh₃tiEvery word from Ancient Greek δίδωμι