The Thai script
Thai Consonants · ค kho khwai

#4 of forty-four · low class

ค

kho khwai

ค ควาย · buffalo

Low class อักษรต่ำ

Low class is the shifted class — the same mark lands a different tone than on mid or high.

Pronunciationinitial /kʰ/
คlooped · print
คloopless · modern
คhandwritten
Initial sound/kʰ/RTGS kh · Paiboon k
As finalk · แม่กกcloses a syllable → “dead”
Frequency#16 of 44common
CodepointU+0E04
ค ควาย (kho khwai) — Thai consonant meaning 'buffalo', engraved specimen plate
ควาย · buffalo — engraved specimen plate
๑What tone does ค give?class isn’t trivia — it’s the tone engine

A consonant’s class exists for one reason: it decides the tone. Low class is the shifted class — the same mark lands a different tone than on mid or high. Here’s every outcome for ค as the initial:

Syllable– No mark◌่ mái èek◌้ mái thoo
Liveopen or sonorant endmidfallinghigh
Dead · longlong vowel + stopfallingfallinghigh
Dead · shortshort vowel + stophighfallinghigh

Live syllable — open or sonorant end

–No markmid
◌่mái èekfalling
◌้mái thoohigh

Dead · long syllable — long vowel + stop

–No markfalling
◌่mái èekfalling
◌้mái thoohigh

Dead · short syllable — short vowel + stop

–No markhigh
◌่mái èekfalling
◌้mái thoohigh

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 →

๒Easy to mix upby shape, and by sound

Looks like — watch the shape

คkho khwai/kʰ/ · low
vs
ดdo dek/d/ · mid

The tell: ด has a clean rounded head-loop and a smooth body; ค has a wavier top and a taller, more angular right side.ค is /kʰ/ low · ด is /d/ mid.

Sounds like — watch the spelling

Same initial /kʰ/:

Same final /k/ — identical at a word’s end:

๓In real wordsthe letter at work
๔How it’s writtenstart at the head

Start at the head — the little loop — then one continuous stroke. Written between the guide lines, the body sits in the middle band.

๕Where it comes fromorigin & lineage

Indic — Sanskrit voiced g.

OriginIndic
LineageBrahmi → Khmer → Thai
UnicodeU+0E04
Statusin current use