Where does “วาติกัน” come from?

วาติกัน (Thai) comes from English Vatican, from Latin Vātī̆cānus, from Latin vātēs, from Proto-Indo-European weh₂t- — excited, inspired; possessed, raging.

Ancestry of “วาติกัน”, step by step

StepLanguageWordMeaning
1EnglishVaticanRelating to the Vatican City state
2LatinVātī̆cānus
3Latinvātēsseer, soothsayer, diviner, prophet, prophetess
4Proto-Indo-Europeanweh₂t-excited, inspired; possessed, raging
Every word from Proto-Indo-European weh₂t-Every word from Latin vātēsEvery word from Latin Vātī̆cānus