Low class is the biggest class, so Thai splits it in two. Group 1 is the paired low consonants — each sounds identical to a high-class partner (ค sounds like ข, ช like ฉ, ท like ถ, พ like ผ, ฟ like ฝ, ซ like ส, ฮ like ห). Same sound, different class — and that's the whole point: the class changes which tones the syllable can carry. Low-class names start on a plain mid tone: khaw, chaw, thaw.
Every Thai consonant has a two-part name: its sound plus a word that starts with it — like saying “A for Apple.” So ก is gaw gài: “gaw” is the sound, ไก่gài means chicken. Tap a card to hear the full name, or the pill to hear just the word.
ค
khaw khwaai
“buffalo”
ฆ
khaw rá-khang
“bell”
ช
chaw cháang
“elephant”
ซ
saw sôo
“chain”
ฌ
chaw chuhr
“tree (archaic)”
ฑ
thaw mon-thoo
“Montho (Ramakien queen)”
ฒ
thaw phûu-thâo
“elder”
ท
thaw thá-hǎan
“soldier”
ธ
thaw thong
“flag”
พ
phaw phaan
“offering tray”
ฟ
faw fan
“tooth”
ภ
phaw sǎm-phao
“sailing junk”
ฮ
haw nók-hûuk
“owl”
Obsolete letter
Part of the traditional 44-letter alphabet but no longer used in modern spelling — worth recognising, so it is shown here, but never tested.