Memorable Press
Browse fonts
High class consonant · letter 22 of 44

ถ tho thung

ถ (tho thung) is a high-class consonant named after ถุง, “sack”. At the start of a syllable it is /tʰ/, written th in RTGS; at the end of one it is /t̚/ (t).

See it in 61 fontsAll 44 consonants
ถถ ถุงtho thung · sack
Thai name
ถ ถุง · tho thung
Name word
ถุง, sack
Class
High class
At the start of a syllable
/tʰ/ · RTGS th
At the end of a syllable
/t̚/ · RTGS t
Unicode
U+0E16 · THAI CHARACTER THO THUNG
In HTML
ถ or ถ
Kedmanee key
5
Pattachote key
Shift + O

How it sounds

The common high-class th, aspirated like the t in “top”. The th in RTGS is never the th of “thin”.

5 other letters have the same sound at the start of a syllable: ฐ tho than (high), ฑ tho montho (low), ฒ tho phuthao (low), ท tho thahan (low), ธ tho thong (low).

Easy to mistake for ภ pho samphao and ก ko kai: compare them at a large size in the grid below.

Class and tone

With no mark, a high-class letter gives a rising tone in a live syllable and a low tone in a dead one. Mai ek gives low and mai tho falling; the other two marks are not used.

Syllables with ถ and the vowel า
SpellingSyllableTone
No mark, live syllable (long vowel)ถาRising
No mark, dead syllable, short vowelถะLow
No mark, dead syllable, long vowelถากLow
Mai ekถ่าLow
Mai thoถ้าFalling
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 ถ

ThaiRTGSMeaning
ถนนthanonroad, street
ถามthamto ask
ถูกthukcheap; correct
ถ้าthaif
รถrotcar, vehicle

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

ถ 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.