The wai (ไหว้) is Thailand's iconic greeting: palms pressed together at the chest, fingertips up, with a slight bow of the head. That one graceful gesture does the work of hello, thank you, sorry, and "I respect you" all at once. You'll likely be offered your first within minutes of arriving.
Returning it well is one of the fastest ways to show you're paying attention.
How to wai
Bring your palms together as if in prayer, fingers pointing up, and bow your head slightly so your thumbs come toward your face. The key detail is height: the higher your hands, the more respect you're showing.
- Chest level, thumbs near the chin — for friends and people your own age.
- Nose level, thumbs to the tip of the nose — for elders, teachers, and bosses.
- Brow level, thumbs between the eyebrows — the highest wai, reserved for monks and images of the Buddha.
You don't need to measure it to the millimeter. Aim a little higher for anyone clearly older or more senior, and you'll be read as respectful.
Say it with sawasdee
A wai rarely travels alone. Pair it with sawasdee (สวัสดี) and your politeness particle — sawasdee krub for men, sawasdee ka for women — and you've delivered a complete, warm Thai hello.
สวัสดีครับ
sawasdee krub
Hello (male speaker)
สวัสดีค่ะ
sawasdee ka
Hello (female speaker)
Who wais first
There's a quiet choreography to it. The younger or lower-status person offers the wai first, and the senior person returns it, often less deeply. As a visitor you don't need to track the hierarchy precisely; just remember one easy rule: if someone wais you, return it. Leaving a wai hanging is like ignoring an outstretched hand. The hierarchy mostly runs upward: you don't expect one back from a monk, and you generally don't initiate to someone much your junior, but between adults meeting as equals a returned wai is simply good manners.
When not to wai
You can over-wai, and it's worth knowing where to hold back.
Don't offer a wai to young children or to service staff who are mid-task — a waiter setting down your plate, a cashier counting your change. A warm smile and a nod is the right response there, and a full wai can even fluster them. And don't wait for a monk to wai you back: monks don't return a layperson's wai, and that's expected, not a snub.
Foreigners and the wai
Here's the reassuring part: Thais are genuinely pleased when foreigners wai, and no one expects yours to be flawless. A slightly clumsy, well-meant wai lands far better than none at all. Watch how locals do it, mirror the height they offer you, and you'll fit right in. If your hands are full of shopping bags or a phone, a small bow of the head with a smile stands in perfectly — the intention counts for far more than the form.
The wai turns its most formal at temples, where you'll wai Buddha images and monks with the highest, most careful version. If a temple visit is on your list, our guide to Thai temple etiquette walks through the dress code and customs that go with it.
Keep learning Thai
The wai and a friendly sawasdee are the first two things any visitor to Thailand should master. Get the greeting sounding right with our free Thai greetings, then practice with audio and spaced repetition in the Pretalk app until hello feels automatic — hands and all.
