Where does “บุพทิศ” come from?

บุพทิศ (Thai) comes from Thai ทิศ, from Sanskrit दिश्, from Proto-Indo-Iranian *dayć-.

Ancestry of “บุพทิศ”, step by step

บุพทิศ traces back through two separate lines of ancestry.

via Thai ทิศ

StepLanguageWordMeaning
1Thaiทิศdirection; point of the compass
2Sanskritदिश्quarter; region; direction; place; part; quarter,...
3Proto-Indo-Iranian*dayć-

via Thai บุพ

StepLanguageWordMeaning
1Thaiบุพfront
Every word from Proto-Indo-Iranian *dayć-Every word from Sanskrit दिश्Every word from Thai ทิศ