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Low class consonant · letter 11 of 44

ซ so so

ซ (so so) is a low-class consonant named after โซ่, “chain”. At the start of a syllable it is /s/, written s in RTGS; at the end of one it is /t̚/ (t).

See it in 61 fontsAll 44 consonants
ซซ โซ่so so · chain
Thai name
ซ โซ่ · so so
Name word
โซ่, chain
Class
Low class
At the start of a syllable
/s/ · RTGS s
At the end of a syllable
/t̚/ · RTGS t
Unicode
U+0E0B · THAI CHARACTER SO SO
In HTML
ซ or ซ
Kedmanee key
Shift + ;
Pattachote key
Shift + I

How it sounds

The low-class s. The high-class s is written ส in most words, and ศ or ษ in words from Pali and Sanskrit.

3 other letters have the same sound at the start of a syllable: ศ so sala (high), ษ so ruesi (high), ส so suea (high).

Easy to mistake for ช cho chang and ข kho khai: compare them at a large size in the grid below.

Class and tone

With no mark, a low-class letter gives the mid tone in a live syllable; in a dead one the tone is high when the vowel is short and falling when it is long. Mai ek gives falling and mai tho high.

Syllables with ซ and the vowel า
SpellingSyllableTone
No mark, live syllable (long vowel)ซาMid
No mark, dead syllable, short vowelซะHigh
No mark, dead syllable, long vowelซากFalling
Mai ekซ่าFalling
Mai thoซ้าHigh
Mai tri–not used with this class
Mai chattawa–not used with this class

The syllables show the rule, not words to learn. The tone rules explain live and dead syllables.

Words with ซ

ThaiRTGSMeaning
ซื้อsueto buy
ซ้ายsaileft (side)
ซอยsoilane, side street
ซ่อมsomto repair
ก๊าซkatgas

RTGS shows neither tone nor vowel length; type a word into the font tester to see it in every font.

ซ in every font

The letter in each of the 61 families you can download here, in its regular style. Looped faces start the stroke from a small circle; loopless ones leave it out. Each card opens the family’s page.