ໂດຍຂ້ານ້ອຍ

Etymology
From + : "by (this) little slave", "by the service of this inferior slave." Compare the structure "preposition + self-deprecating pronoun" in 🇨🇬.

Interjection

 * 1) used as an extreme polite expression of affirmation or agreement.

Particle

 * 1) (particle used for politeness by social inferiors to extreme social superiors such as monks and nobility)
 * 2) yes