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Thai Consonants · to tao

#21 of forty-four · mid class

to tao

เต่า · turtle

Mid class อักษรกลาง

Mid class is tonally neutral — every tone mark maps to exactly one tone.

Pronunciationinitial /t/
looped · print
loopless · modern
handwritten
Initial sound/t/RTGS t · Paiboon dt
As finalt · แม่กดcloses a syllable → “dead”
Frequency#12 of 44a day-one letter — you’ll meet it immediately
CodepointU+0E15
ต เต่า (to tao) — Thai consonant meaning 'turtle', engraved specimen plate
เต่า · turtle — engraved specimen plate
What tone does give?class isn’t trivia — it’s the tone engine

A consonant’s class exists for one reason: it decides the tone. Mid class is tonally neutral — every tone mark maps to exactly one tone. Here’s every outcome for as the initial:

Syllable No mark◌่ mái èek◌้ mái thoo◌๊ mái trii◌๋ chattawa
Liveopen or sonorant endmidlowfallinghighrising
Deadstop end or short vowellowlowfalling

Live syllable open or sonorant end

No markmid
◌่mái èeklow
◌้mái thoofalling
◌๊mái triihigh
◌๋chattawarising

Dead syllable stop end or short vowel

No marklow
◌่mái èeklow
◌้mái thoofalling

Change the initial to another class and the same marks produce different tones — that shift is what makes tone a small system, not 44 separate facts. Derive tones on the Tones surface

Easy to mix upby shape, and by sound

Looks like — watch the shape

to tao/t/ · mid
vs
do dek/d/ · mid

The tell: ต has a small notch — a tooth — at the top where ด is smoothly rounded. The saying: ต has a tooth, ด is smooth. is /t/ mid · is /d/ mid.

Sounds like — watch the spelling

Same initial /t/:

In real wordsthe letter at work
How it’s writtenstart at the head

Stroke-order animation isn’t available for this letter yet. Nearly every Thai letter begins at its head — the little loop — then one continuous stroke.

Where it comes fromorigin & lineage

Indic — Sanskrit dental t.

OriginIndic
LineageBrahmi → Khmer → Thai
UnicodeU+0E15
Statusin current use