Thai has 44 consonants in its official alphabet, but not all are used equally. This lesson covers archaic (โบราณ) and obsolete (ล้าสมัย) consonants — characters that exist for historical completeness but rarely appear in modern Thai.
Why learn them?
ฃ (khɔ̌ɔ khùat - bottle) and ฅ (khɔɔ khon - person) are officially obsolete:
| Consonant | Class | Status | Replaced By |
|---|---|---|---|
| ฃ | High | Obsolete | ข |
| ฅ | Low | Obsolete | ค |
These were removed from official use in 1942. Today:
Where you might see them:
These consonants were borrowed from Sanskrit/Pali to represent sounds that didn't exist in Thai:
Important: ฎ and ฏ are middle-class like ด and ต. This matters for tone:
Thai has SIX consonants making the /kh/ sound:
| Consonant | Class | Status |
|---|---|---|
| ข | High | Common |
| ฃ | High | Obsolete |
| ค | Low | Common |
| ฅ | Low | Obsolete |
| ฆ | Low | Rare (Sanskrit) |
| ค (initial cluster) | Low | Common |
This seems redundant, but historically these represented different Sanskrit sounds.
When you encounter these rare consonants:
You'll almost never need to write these. Use the common equivalents:
Most Thai keyboards don't include ฃ and ฅ. You'll find them in:
The word คน (person/people) was historically spelled ฅน. Some Thais use ฅน nostalgically or artistically:
The meaning is identical; it's a spelling choice.
In Lesson 10, you'll learn the final rare consonants (ฐ ฑ ฒ ฬ) to complete the 44-consonant inventory.