The /S/Sound: Speech Therapy Guide & Practice Games

The /S/ sound is a voiceless alveolar fricative and one of the most frequently occurring sounds in English. It is produced by directing a narrow stream of air over the tongue and through a small gap between the tongue tip and the ridge behind the upper teeth. Errors with this sound are commonly referred to as a lisp.

calendar_monthAge of mastery:5-7
trending_upFrequency:Very Common
sports_esportsGames available:8
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How to Make the /S/ Sound

Place the tip of your tongue just behind your upper front teeth, close to but not touching the bumpy ridge (alveolar ridge). Keep your teeth close together and your lips slightly spread. Blow a thin stream of air over your tongue tip and through the small gap between your tongue and the ridge. Your voice should be off — it is a quiet, hissing sound like a snake.

IPA Symbol: /s/

Most children master the /S/ sound by age 5-7. A frontal lisp (tongue between the teeth) is common in children under age 4-5 and often resolves naturally. A lateral lisp (air escaping over the sides of the tongue) typically requires speech therapy intervention.

Common /S/ Sound Errors

  • error_outlineFrontal lisp: tongue pushes between the teeth, making /S/ sound like /TH/
  • error_outlineLateral lisp: air escapes over the sides of the tongue, producing a slushy sound
  • error_outlineSubstituting /TH/ for /S/ (e.g., "thun" for "sun")
  • error_outlineOmitting /S/ in blends (e.g., "top" for "stop")
  • error_outlineDistorting /S/ so it sounds whistly or slushy
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/S/ Word Lists by Position

Practice these words organized by where the /S/ sound appears. Start with the position your child finds easiest.

Initial Position

/S/ at the beginning of words

sunsoapsockseesitsandseedsailsicksingsoupsealsafesamesavesixsidesomesillysummer

Medial Position

/S/ in the middle of words

bisoncastledinosaureraserfaucetfossilicinglistenmessymissingmusclepencilpersonpopsicleracingroosterseesawwhistleoutsidebaseball

Final Position

/S/ at the end of words

busdicedressfaceglassgoosegrasshouseicejuicekissmoosemousenicepeaceplacepriceracericevoice
sports_esportsPractice these words with our games
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Tips for Practicing the /S/ Sound at Home

Evidence-based strategies parents can use to support /S/ sound practice.

1

Use a mirror so your child can see that the tongue stays behind the teeth, not between them.

2

Try the "long T" method: have your child say /T/ and then hold the air stream to transition into /S/.

3

Use a straw to help direct airflow: place a thin straw at the center of the lips and blow through it to feel the narrow airstream needed for /S/.

4

Practice /S/ blends (sp, st, sk, sn, sm) once your child can say /S/ alone, as blends strengthen the sound.

5

The "butterfly" cue: tell your child the tongue is a butterfly resting behind the top teeth — it should not fly out between the teeth.

6

Keep sessions short and positive. Five minutes of focused practice beats 20 minutes of frustration.

7

Use toothpaste or peanut butter on the alveolar ridge to help your child feel where the tongue tip should go.

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Practice Sentences for the /S/ Sound

Read these sentences aloud with your child. Words containing the /S/ sound are highlighted.

Sam sat in the sand eating a sandwich.

Six silly seals swam in the sea.

Suzy sipped soup on a sunny summer day.

The bus passed the house on its way to the city.

My sister saw a snake slither through the grass.

Place the ice on the saucer next to the glass of juice.

The soccer game starts at six on Saturday.

The mouse hid a piece of cheese in a safe place.

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Games for the /S/ Sound

Practice the /S/ sound with interactive games designed by speech pathologists.

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Bubble Pop

/S/ practice

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Sound Fishing

/S/ practice

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Memory Match

/S/ practice

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Pizza Builder

/S/ practice

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Space Blaster

/S/ practice

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Whack-a-Word

/S/ practice

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Word Runner

/S/ practice

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Story Adventure

/S/ practice

Play games for the /S/ sound
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Frequently Asked Questions About the /S/ Sound

Common questions parents ask about the /S/ sound in speech therapy.

What is a lisp and when should I be concerned?expand_more
A lisp occurs when the tongue is positioned incorrectly for the /S/ and /Z/ sounds. A frontal lisp (tongue between the teeth) is developmentally normal until about age 4-5. A lateral lisp (slushy-sounding /S/) is not part of typical development and usually requires therapy at any age.
When should my child be able to say the /S/ sound correctly?expand_more
Most children can produce /S/ correctly by age 5-7. If your child still has a noticeable lisp after age 5, consider consulting a speech-language pathologist for an evaluation.
Can a lisp be fixed?expand_more
Yes, with consistent practice and often with the help of a speech-language pathologist, most lisps can be corrected. Frontal lisps respond very well to therapy. Lateral lisps may take longer but are also treatable.
How can I help my child practice the /S/ sound at home?expand_more
Use a mirror during practice so your child can see tongue placement. Start with /S/ in isolation, then single words, then sentences. Keep sessions short (5-10 minutes) and fun. Games, tongue twisters, and reward charts can help maintain motivation.
Should I worry about /S/ blends like 'sp' and 'st'?expand_more
S-blends are typically mastered a bit later than /S/ alone. If your child can say /S/ by itself but struggles with blends, targeted blend practice usually helps. If they cannot produce /S/ at all, focus on the isolated sound first before tackling blends.

Related Sounds

/Z/

Z Sound

View guide

/SH/

SH Sound

View guide

/TH/

TH Sound

View guide

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