สวัสดี
Sounds like: sawatdi
2
Syllables
สวัส
low
ดี
mid
In Thai, each syllable's tone comes from its own spelling. Neighbouring syllables do not change it.
Syllable 1: สวัส (sawat) — low tone
First consonant
ส
Consonant class
High-class
Tone mark
None
Syllable type
dead
High-class consonant + dead syllable, short vowel = low tone
Syllable 2: ดี (di) — mid tone
First consonant
ด
Consonant class
Mid-class
Tone mark
None
Syllable type
live
Mid-class consonant + live syllable, no tone mark = mid tone