sawasdee-krub, sawasdee -Kah
When being introduced or greeting someone, men say Sawasdee-krub and women say Sawasdee-kah. Thais greet each other with a "wai." (Pictured above) Foreigners are not expected to initiate the wai gesture, but it is an insult not to return the wai. If a wai is not offered to you, shake hands with men and smile and nod to women.
In order to make the sentences sound polite, Thai people usually use ending particles "Khrub" for males and "Kah" for females at the end of the sentences.
Sabai sabai – The word “sabai” literally means happy, but is used to meancomfortable or relaxed. Thai's sometimes say a word twice to intensify its meaning. So "sabai sabai" means "everything's chilled”. This state of tranquility is often described as the Thai lifestyle.
"Mai Pen Rai" is a Thai saying that can loosely be translated to English as "no worries, no problem, it's ok, don't sweat it, it will be okay"...you get the idea. But mai pen rai is much more than just a saying -- it's a small phrase that encapsulates the Thai philosophy on life, and it's important to know about it to act appropriately in the culture. The Thais aren't just a friendly people, they're also incredibly laid-back. Much of this can be attributed to the devout Buddhist principles of the people, and it can also be attributed to the notion of saving face. It's not socially acceptable for Thais to lose their cool when things go wrong. The vast majority of the time they'll just laugh, say "mai pen rai," and not lose any sleep over it. So why does this matter? Because things can often be slower or less efficient than you may expect in Thailand; thus, it's important to take everything in stride, have a sense of humor, and just live the mai pen rai lifestyle. If you do this, you'll have a true Thai experience, and maybe even learn to take things a little slower.
Simply mean "Thank You"