In this lesson, you'll complete the middle-class consonants with 5 more characters. These include nasals (ม), liquids (ร ล), approximants (ย ว), and the unique silent consonant (อ).
The consonants in Lesson 1 were all stops — sounds made by completely blocking airflow then releasing. Today's consonants are different:
This affects their behavior in final position — they don't become unreleased stops like the Lesson 1 consonants.
อ is the most unusual Thai consonant. It has two completely different roles:
When starting a syllable that begins with a vowel sound, อ serves as a silent placeholder:
In certain vowel combinations, อ represents the sound /ɔɔ/:
This dual nature makes อ essential despite being "silent" in many words.
Unlike the stop consonants from Lesson 1, these consonants keep their basic sound quality in final position:
| Consonant | Initial Sound | Final Sound | Example |
|---|---|---|---|
| ม | m | m | มา (maa) / ลม (lom) |
| ย | y | i (as vowel) | ยา (yaa) / สาย (sǎai) |
| ร | r (rolled) | n | รัก (rák) / ตอร์ (dton) |
| ล | l | n | ลา (laa) / กล (gon) |
Important: Both ร and ล become /n/ in final position. This surprises many learners!
Thai ร is a rolled or flapped R, similar to Spanish. In casual speech, many Thai speakers substitute ล for ร (so "ร เรือ" sounds like "ล เลือ"). This is very common but considered informal.
In careful speech:
You've now learned all 9 middle-class consonants! Here's the complete set:
| Stop Consonants | Nasals/Liquids |
|---|---|
| ก จ ด ต ป บ | ม ย ร ล อ |
Why only 9 middle-class versus 24 low-class? Historical sound shifts moved many consonants to the low class over time. The remaining middle-class consonants are the "original" unvoiced stops plus sonorants.
With no tone mark, middle-class consonants produce:
This will make more sense after you learn vowels and tone marks!
In Lesson 3, you'll start learning high-class consonants — these create rising tones and are the "aspirated" (breathy) versions of sounds you already know.