The following special symbols are used in Thai writing.

ๆ Repetition

The repetition character indicates a repetition of the previous word. Repeated words are often used to add emphasis or intensify the meaning.

The repetition character itself is called ยมก  /yaH mohkH/.

ฯ Abbreviation

This appears most famously in the Thai name of the capitol city which Westerners call Bangkok. The actual name of the city, the longest place name in the world, is:

Using the abbreviation symbol, the name is commonly abbreviated as follows:
กรุงเทพฯ  /groongM thaehpF/.

This symbol is called เปยยาลน้อย  /bpeeuyM yaanM naawyH/.

ฯลฯ Et cetera

This symbol is called เปยยาลใหญ่  /bpeeuyM yaanM yaiL/.

-์ Silence

The silence character is placed over a consonant which is not pronounced. It is frequently used in loanwords (words borrowed from another language and spelled phonemically with the Thai alphabet) to indicate that the original word had a letter which the Thai do not pronounce. In the following example, each consonant ร carries the silence marker since there is no final /-r/ phoneme in Thai:

The silence mark itself is called การันต์  /gaaM ran[d]M/.

There are also a Thai few words in which the final consonant or vowel (or occasionally even a non final consonant) is silent although not marked with the gaaran; for example, จักร  /jak[r]L/ does not have a gaaran for the final consonant ร. The vowel -ิ in ญาติ  /yaatF/ is silent, so the the word should be pronounced as shown, not "yaadti." This word also does not contain the gaaran to indicate that the final vowel is silent.
There are other special cases. For example, the consonant cluster ทร is often treated as a single consonant, thus in the word จันทร์  /janM/ the gaaran indicates that the last two consonants are both silent.

฿ Baht

The Thai currency symbol, used as a prefix on numeric บาท  amounts.

๏ Paragraph

Known as ฟองมัน, or informally the "bird's eye" ตาไก่, this symbol can be used to indicate the beginning of paragraphs, but is now used only for special poetic or artistic effect.

-ฺ Phinthu (พินทุ)

This archaic orthography is nowadays mostly used in dictionaries to disambiguate pronunciation. In our online dictionary, the symbol, if used, only appears in a word at the top of its main definition page. The symbol can be used in two ways:

1. Placed underneath the first consonant of an orthographic consonant cluster which may in turn be one of three cases:
   a. A double-consonant cluster
   b. Silent ห, called หอ นำ /haawR nahmM/
   c. Silent อ, called ออ นำ /aawM nahmM/
   Regarding (b.) and (c.): in other words, when appearing under ห or อ, it indicates that the consonant is acting in its silent role.
2. Placed underneath the final-sounding consonant of a syllable.

Both of these rules can be summarizied "more snappily," as Richard Wordingham says, by noting that "Phinthu indicates that there is no vowel sound associated with the [marked] consonant."

๚   อังคั่นคู่  /angM khanF khuuF/

Indicating the end of a chapter, episode, verse, or section of Thai text. ๚

๛   Khomut (โคมูตร) The End

Used to mark the end of the entire text. ๚ะ๛