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What is Siot (ㅅ) in Korean?

Siot (ㅅ) is called 시옷 in Korean and is s at the start of a syllable and a short t at the end. ㅅ (siot) needs 2 strokes on paper, uses the teeth ridge to make its sound, and is one of the 14 basic consonants. You can hear it in 사과 (apple; sorry) and 시계 (clock), and see it closing a syllable in 옷 (clothes).

Siot ㅅ: sound, strokes, series and finals

ㅅ

ㅅ SiotKorean consonant · basic

Siot is s at the start of a syllable and t at the end.

Sound s / t at the start / at the end
Name 시옷 siot
Strokes 2
Plain · Aspirated · Tense ㅅ ㅆ
Finals that sound [t] ㄷ ㅅ ㅆ ㅈ ㅊ ㅌ ㅎ

Siot (ㅅ) at a glance

Fact · Value
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FactValue
Name 시옷 (siot)
Sound at the start s — a soft hiss
Sound at the end t (the same as ㄷ)
Strokes 2
Group basic consonant
Made with the teeth ridge
Example words at the start: 사과 (apple), 사자 (lion); at the end: 도넛 (donut), 옷 (clothes)
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In dictionary order ㅅ (siot) is consonant number 10 of 19, after ㅃ and before ㅆ. With 2 strokes, ㅅ (siot) has the same stroke count as 4 other consonants, namely ㄲ, ㄷ, ㅈ, and ㅋ.

Three ways to remember ㅅ

Open book Words that start with ㅅ

  • apple사apple
  • lion사자lion
  • sweatersweater
  • slippersslippers

Sound: s.

Words with ㅅ at the end

  • donutdonut
  • clothes
  • robot
  • seed

More words with ㅅ

Sound: t.

How to say ㅅ

시옷

Let air hiss between the tongue and the ridge behind the upper teeth, as in English s. Before ㅣ and the y-vowels (ㅑ, ㅕ, ㅛ, ㅠ) the tongue moves back, so 시 sounds close to English she.

At the start ㅅ is romanized s, as in 사람 (saram, person). As a 받침 it does not hiss: it stops like a final ㄷ, so 옷 (clothes) ends in t and the name 시옷 is read [시옫].

How ㅅ ends a syllable

ㄷ[t]Open ㄷ digeutㅅ[t]ㅆ[t]Open ㅆ ssangsiotㅈ[t]Open ㅈ jieutㅊ[t]Open ㅊ chieutㅌ[t]Open ㅌ tieutㅎ[t]Open ㅎ hieut

ㅅ (siot) loses its own colour at the end of a syllable and joins the t-stop family, which you can hear in 옷 (clothes). In the case of ㅅ (siot), put a vowel behind it and the real consonant sound returns: 옷이 is [오시].

Because ㅅ is read as ㄷ here, the written letter ㅅ (siot) and the heard letter ㄷ are not always the same. With ㅅ (siot), that gap is why the spelling of a word can look different from the sound you hear.

How to write ㅅ

Trace Siot ㅅ with a finger, mouse or pen: start at the numbered dot, follow the dotted arrow, and press Clear to try again.

Print style 정자체

Follow the numbers and dotted arrows

12

Handwriting 필기체

Same stroke order as print style

1
Stroke 1

From the top, sweep down to the lower left.

2
Stroke 2

Start from the middle of the first stroke and sweep down to the lower right.

Write ㅅ (siot) in two strokes, top first and left first.

In 소 and 수 the two legs of ㅅ spread wide above the vowel; in 사 they are narrow and tall. Start the second stroke at the middle of the first, not at its top.

ㅅ and its look-alikes

Letter · Name · Sound
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LetterNameSound
ㅅ 시옷 (siot)s, as in shelter
ㅆ 쌍시옷 (ssangsiot)ss, tight hiss
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ㅅ and ㅆ make pairs such as 사다 (to buy) and 싸다 (cheap). ㅅ is soft with a little breath, while ㅆ is a sharp, tense hiss.

Learners often read a final ㅅ as s, saying 옷 as os. As a 받침 it becomes a stopped t: 옷 is [옫], and only before a vowel (옷을 [오슬]) does the s come back.

Why ㅅ looks the way it does

ㅅ copies the shape of a tooth. It is a basic shape of Hunminjeongeum; ㅈ and ㅊ were built from it with added strokes.

ㅅ (siot) sits in the group that uses the teeth ridge, since the inventors of Hangul sorted consonants by where the sound is made.

Words that use ㅅ

Word · Reading · Meaning
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WordReadingMeaning
산 sanmountain (noun)
사람 sa-ramperson (noun)
소금 so-geumsalt (noun)
시계 [시계/시게] si-gye-/-si-geclock (noun)
다섯 [다섣] da-seotfive (numeral)
라켓 ra-ketracket (noun)
초콜릿 cho-kol-litchocolate (noun)
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In 사과 (apple; sorry), ㅅ (siot) is the first sound of the first block 사, which is read sa.

In 시계 (clock), ㅅ (siot) is the first sound of the first block 시, which is read si.

In 소금 (salt), ㅅ (siot) is the first sound of the first block 소, which is read so.

In 산 (mountain), ㅅ (siot) is the first sound of the first block 산, which is read san.

In 신발 (shoes), ㅅ (siot) is the first sound of the first block 신, which is read sin.

Syllables you can build with ㅅ

Start a block with ㅅ and add a vowel: 사 (sa), 샤 (sya), 서 (seo), and 셔 (syeo), and more.

Say the whole row, 사 (sa), 샤 (sya), 서 (seo), 셔 (syeo), 소 (so), 쇼 (syo), 수 (su), 슈 (syu), 스 (seu), 시 (si), and notice that only the vowel moves.

Try it yourself

Pick a vowel and a final for ㅅ and read the block it makes. Open the syllable builder with ㅅ ready

ㅅ writing worksheet (free printable)

Preview of the one-page ㅅ (siot) tracing worksheet: ㅅ: 2 strokes to trace

Worksheet · Level 1 · Letters

Korean letter tracing worksheet: ㅅ (siot)

The one-page Siot ㅅ sheet shows ㅅ in 2 strokes, traces it, writes it with six vowels (사 서 소 수 스 시) and ends with a game of finding ㅅ among look-alikes.

  • 1 page
  • A4 · US Letter
  • PDF · 103 KB
  • Free · no sign-up

Want more? Get all 19 consonants in one pack

Worksheet information

How to use
Say ㅅ out loud, trace its 2 strokes, then write it with six vowels.

Practice ㅅ

Next is ㅆ (ssangsiot). Then practice 사, 서, 소 and 수 and print the ㅅ tracing worksheet.

The worksheet for ㅅ (siot) is a single printable page made from the same data as this page: it has the stroke order, tracing rows and a find-the-letter game.

Try it yourself

Put Siot ㅅ, s, into the builder and read the block it makes. Open the syllable builder with ㅅ ready

ㅅ (Siot) — FAQ

What should the ㅅ pronunciation sound like?

Read it as s at the start of a syllable and a short t at the end; 사과 (apple; sorry) is a good word to practice with.

ㅅ vs ㅆ: how are they different?

ㅅ is read with a soft hiss, while ㅆ is read with a tight hiss. Say 사 (sa) and 싸 (ssa) in a row to hear it; ㅅ takes 2 strokes and ㅆ takes 4 strokes.

What is ㅅ called in Korean and what sound does it make?

시옷 (siot) is the name of ㅅ, which is read s at the start of a syllable and a short t at the end; compare 사과 and 옷.

How many strokes does ㅅ have?

ㅅ has 2 strokes: a sweep to the lower left, then a sweep to the lower right starting from the middle of the first.

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