Where does “กูลั่น” come from?

กูลั่น (Thai) comes from Thai กู, from Proto-Tai kuːᴬ — I; me; singular first-person pronoun.

Ancestry of “กูลั่น”, step by step

กูลั่น traces back through two separate lines of ancestry.

via Thai กู

StepLanguageWordMeaning
1Thaiกูa first person pronoun: I
2Proto-TaikuːᴬI; me; singular first-person pronoun

via Thai ลั่น

StepLanguageWordMeaning
1Thaiลั่นto give or cause a loud sound or noise: to roar,...
Every word from Proto-Tai kuːᴬEvery word from Thai กู