Where does “ความประพฤติ” come from?

ความประพฤติ (Thai) comes from Thai ประพฤติ, from Sanskrit प्रवृत्ति, from Sanskrit प्र-, from Proto-Indo-Aryan pra-, from Proto-Indo-Iranian pra-, from Proto-Indo-European pro-, from Proto-Indo-European por-, from Proto-Indo-European per- — passed , crossed.

Ancestry of “ความประพฤติ”, step by step

ความประพฤติ traces back through two separate lines of ancestry.

via Thai ประพฤติ

StepLanguageWordMeaning
1Thaiประพฤติto conduct; to behave; to treat
2Sanskritप्रवृत्तिmoving forwards, advance, progress
3Sanskritप्र-forward, before; forward, forth; in front of
4Proto-Indo-Aryanpra-forth
5Proto-Indo-Iranianpra-toward, forward
6Proto-Indo-Europeanpro-toward, forward
7Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
8Proto-Indo-Europeanper-before, in front; first; to go through
9Proto-Indo-Europeanpr̥tóspassed , crossed

via Thai ความ

StepLanguageWordMeaning
1Thaiความaffair; matter; content; essence; subject;...
2Proto-Taiɣwaːmᴬmatter
Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Indo-European por- →