What is (o)-?

(o)- is a Thai "invisible vowel"

It is one of the two vowels in Thai which is not written (hence the name "invisible").

Here is a list of all Thai vowels.

Sound:

short [o]

Take care:

This sound is not written. It appears between certain consonant combinations.

Writing

Thais add to write stand-alone vowels:
(o)-
Info: is the "silent consonant", it has no sound. It is used when writing vowels as a placeholder for other consonants.
(o)- needs to be followed by a closing consonant.
Sample words:
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