๔๐๐
sìi-rɔ́ɔiMeaning
1NounA1
four hundred
the number 400, written in Thai numerals
Examples
หนังสือnǎng-sʉ̌ʉหนังสือnǎng-sʉ̌ʉ1book (printed work)2document; letterเล่มlêmเล่มlêm1CL: books/volumes/issues2classifier: knives, swords, candles, cartsนี้níiนี้níi1this (near speaker)2this one3this; the present (time/topic)มีmiiมีmii1[to] have; possess2there is/are; exist3[to] experience; undergo๔๐๐sìi-rɔ́ɔi๔๐๐sìi-rɔ́ɔifour hundredหน้าnâaหน้าnâa1face2front; frontage3page4next; upcoming5in front; at the front6season; time of year7topping (food)
This book has 400 pages.
3 more examplesShow less
My house number is 400.
I bought this bicycle for 400 baht.
เมื่อวานmʉ̂ʉa-waanมีmiiนักเรียนnák-riianเข้าร่วมkâo-rûuamกิจกรรมgìt-jà-gamประมาณbprà-maan๔๐๐sìi-rɔ́ɔiคนkon
Yesterday, about 400 students participated in the activity.
Tones
See how the spelling sets each syllable's tone, step by step.
Why is ๔๐๐ said สี่-ร้อย?
sìi-rɔ́ɔi
Thai spelling does not always show how a word sounds. This is how it is said.
The tone rules below use the spoken syllables.
2 syllables · pick one to see its rule
How the tone is decided
- Consonant classHigh class
- Tone markMai ek
- Syllable endingLive syllableNot needed here: the tone mark decides.
High class consonants
ขฃฉฐถผฝศษสห
Result
Low tone
sìi
Starts low and stays low, easing slightly down.
High class + Mai ek → Low
Tone chart
Every class and spelling pattern, with this syllable outlined.
| Mid class | High class | Low class | |
|---|---|---|---|
| No mark + live | Mid | Rising | Mid |
| No mark + dead short | Low | Low | High |
| No mark + dead long | Low | Low | Falling |
| Mai ek | Low | Low | Falling |
| Mai tho | Falling | Falling | High |
| Mai tri | High | — | — |
| Mai chattawa | Rising | — | — |