How to pronounce si in pinyin, tone by tone
Hear every tone of si, see the real words that use it, and record yourself for instant AI feedback on your pronunciation.
si
Hear it, then test your tones
Take the free 3–5-minute pronunciation test and get a score for every tone.
si in every tone
丝
sīㄙT1
silk / thread
四
sìㄙˋT4
four
How to say it
s- is a flat "s" with the tongue forward — the opposite of retroflex sh-. Compare si vs shi.
Try it yourself
Record yourself saying 丝 and get instant AI feedback.
Words with si
Related & easily-confused syllables
Now say it — see each syllable’s tone
丝死四sī sǐ sì
si in tones 1, 3, 4
Keep exploring
Test your pronunciation
Free, with a score for every word.
Free French pronunciation testFree French accent testCheck any French textFree Spanish pronunciation testFree Spanish accent testCheck any Spanish textFree German pronunciation testFree German accent testCheck any German textFree Russian pronunciation testFree Russian accent testCheck any Russian textFree Japanese pronunciation testFree Japanese accent testCheck any Japanese textFree Korean pronunciation testFree Korean accent testCheck any Korean textFree English pronunciation testFree English accent testCheck any English text
Master Chinese pronunciation
TonePerfect scores every tone, initial, and final you say — with 2,200+ guided drills.