What is the Thai word for "goodbye"?

The Thai word for "goodbye" is "ลาก่อน" (la gon), which is a direct way to bid farewell. This term is commonly used in everyday conversations when someone is parting ways or ending a conversation. Its use reflects the cultural aspects of politeness and formality often present in the Thai language.

The other options represent different phrases. "ฉันรักคุณ" (chan rak khun) means "I love you," which conveys affection rather than addressing a farewell. "น้ำ" (nam) simply means "water," lacking any context related to parting. "คุณชื่ออะไร" (khun chue arai) translates to "What is your name?", a question typically used to inquire about someone's identity rather than to say goodbye. Therefore, "ลาก่อน" is the only option that appropriately serves the purpose of a farewell in Thai.