Thai pronunciation —
tones, sounds and romanization

Thai pronunciation differs from English on three fundamental points. All of them can be confusing at first — but they are all systematic and learnable.

First: pitch determines meaning. In English we use intonation for feeling and emphasis. In Thai, pitch is a property of individual words. The word maa can have five meanings depending on the tone. Say it on the wrong tone, and you're literally saying a different word.

Second: aspiration. Thai makes a strict distinction between aspirated sounds (kh, ph, th) and unaspirated sounds (k, p, t). In Thai, that distinction is meaning-differentiating.

Third: no final consonant clusters. Thai always ends a syllable on a single consonant or a vowel. Thai final consonants are also pronounced differently — they are not fully released but cut off.

Thai makes a fundamental distinction: aspirated versus unaspirated voiceless stops. In Thai that distinction is meaning-differentiating: กา (kaa = crow) versus ขา (khǎa = leg).

Practice tip: Hold a piece of paper in front of your mouth. For aspirated sounds (kh, ph, th) the paper should move. For unaspirated sounds (k, p, t) it doesn't move.

In addition to kh, ph and th, Thai also has two special stops: dt (halfway between d and t) and bp (halfway between b and p). With practice you'll learn to hear and produce the difference.

In isolated pronunciation, every word sounds as the dictionary describes. In real connected speech, tones sometimes change. This phenomenon is called tone sandhi.

As a beginner you don't need to actively learn tone sandhi, but you need to recognize it when you hear it. The display settings in every lesson are yours to set: play the audio at 0.5× or 0.75×, and switch to full speed once you can follow. Slowing it down keeps the pitch, so the tones stay true.

More about tone sandhi in the article Thai tone sandhi.