Formal:
* ลาก่อน (laa-gawn): This is the most formal way to say goodbye and is appropriate for elders, superiors, or in professional settings.
* สวัสดีค่ะ/ครับ (sa-wat-dee krap/kha): This literally means "hello," but can also be used as a formal way to say goodbye. "Krap" is used by men, and "kha" is used by women.
Informal:
* บาย (bai): This is a casual way to say goodbye, similar to "bye" in English.
* เจอกันใหม่ (jəə-gan-mài): This means "see you later" and is a more casual way to say goodbye.
* ไปแล้วนะ (bpai-lɛ́o-ná): This means "I'm going now" and is a very informal way to say goodbye.
Other ways:
* ไว้เจอกัน (wái jəə-gan): This means "see you again" and is a common way to say goodbye.
* ไปดีๆ นะ (bpai-dii-dii ná): This means "have a safe trip" and is often used when someone is leaving for a long journey.
The best way to say goodbye depends on the context and your relationship with the person you are speaking to.