How to Say Hello in Thai

In Thai, the universal greeting is sà-wàt-dii (สวัสดี), commonly written sawasdee. Men end it with khráp (ครับ) and women with khà (ค่ะ), so a man says sà-wàt-dii khráp and a woman sà-wàt-dii khà. The same word works morning, afternoon, and evening, which makes it the first phrase most learners master.

That single paragraph already puts you ahead of most visitors. But Thai greetings carry more nuance than one word, and using them well is one of the fastest ways to get a warm reaction from Thai people. If you are learning Thai as a beginner, this is lesson one. Let's go through it.

Sà-wàt-dii: The Universal Thai Hello

Sà-wàt-dii (สวัสดี), commonly written sawasdee, is pronounced sà-wàt-dii, with a soft "t" sound closing the second syllable. The polite particle at the end depends on the speaker's gender, not the listener's. A man always says khráp. A woman always says khà.

Thais often pair the greeting with a wâi (ไหว้): palms pressed together at chest level with a slight bow of the head. You are not expected to wâi everyone. Use it with elders and anyone you want to show respect, and when a shop assistant wâis you, you can simply smile back or wâi back to receive the greeting.

Formal vs Casual Greetings

With friends, Thais shorten sà-wàt-dii or drop it entirely. You will hear wàt-dii everywhere on the street, and a casual ngai between people who know each other well. Save these for friends. With your in-laws or an immigration officer, stay with the full sà-wàt-dii khráp or sà-wàt-dii khà.

Good Morning, Afternoon, Evening in Thai

Here is the part textbooks overcomplicate: Thais use sà-wàt-dii at any hour. Time-specific greetings exist, but you will mostly hear them from TV hosts and in formal announcements. Learn to recognize them, and don't worry about using them in daily life. For when each one does get used, including fan dee for sweet dreams, see my guide to good morning and good night in Thai.

How to Respond to a Greeting

The standard reply is to mirror the greeting with your own particle. Right after sà-wàt-dii, Thais often ask sà-baai-dii mái? ("are you well?"). The expected answer is short and positive.

Common Mistakes

The error I hear most from new students is using the wrong particle. A man greeting a woman still says khráp, because the particle follows the speaker. Saying khà as a man will get you a giggle, not offense, but it marks you as a beginner.

Second: dropping the "t" sound. Many learners say "sa-wa-dee" because that is how tourist guides spell it. The middle syllable ends in a soft "t": sà-wàt-dii. Thais will understand you either way, but the correct version sounds noticeably better.

And don't skip the greeting altogether. Walking up to a street vendor and ordering without a sà-wàt-dii feels abrupt in Thailand. Greet first, then ask. It changes the whole interaction, especially outside Bangkok.

Practice

How would you greet each person below? Say it out loud, then check the answers. Answers are given for a female speaker; swap khà for khráp if you are a man.

1. Your hotel receptionist in the morning.
2. A close Thai friend you bump into at the market.
3. Your friend's grandmother, visiting her home.

If you are heading to Thailand soon, my Thai for Travelers course builds on these greetings with the food, transport, and bargaining phrases you will actually use.

Once your hello sounds natural, keep going with my full guide to basic Thai phrases, or work on your pronunciation directly with me in private Thai lessons.