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

The /Z/ sound is a voiced alveolar fricative and the voiced counterpart of /S/. It is produced in the same tongue position as /S/ (tongue tip near the ridge behind the upper teeth), but with the vocal cords vibrating. It appears in words like "zoo," "fuzzy," and "nose."

calendar_monthAge of mastery:4-5
trending_upFrequency:Moderate
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How to Make the /Z/ Sound

Place your tongue in exactly the same position as for /S/: tongue tip just behind the upper front teeth, near the alveolar ridge. Keep your teeth close together. Now turn your voice on — you should feel a buzzing vibration. The sound should be like a buzzing bee: "zzzzz."

IPA Symbol: /z/

Most children master the /Z/ sound by age 4-5. Since it uses the same mouth position as /S/ with added voicing, it typically develops around the same time or shortly after /S/ is mastered.

Common /Z/ Sound Errors

  • error_outlineDevoicing: saying /S/ instead of /Z/ (e.g., "soo" for "zoo")
  • error_outlineThe same lisp patterns seen with /S/ (frontal or lateral lisp)
  • error_outlineSubstituting /D/ for /Z/ (e.g., "doo" for "zoo")
  • error_outlineNot maintaining voicing throughout the word
  • error_outlineOmitting /Z/ at the end of words and plurals
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/Z/ Word Lists by Position

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

Initial Position

/Z/ at the beginning of words

zebrazerozigzagzipzipperzonezoozoomzapzestzinczinniazodiaczombiezookeeperzucchinizenithzephyrzigzagzealous

Medial Position

/Z/ in the middle of words

amazingbuzzercousindaisydesertdizzydozeneasyfizzyfreezerfuzzygazinglaserlizardmusicnoisypuzzleraisinreasonvisitor

Final Position

/Z/ at the end of words

beesbreezebuzzcheesechoosecloseeyesfizzfreezefuzzhisjazznosepleaseprizequizrosesneezethesewas
sports_esportsPractice these words with our games
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Tips for Practicing the /Z/ Sound at Home

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

1

If your child can say /S/, teaching /Z/ is often as simple as "turning the voice on." Have them say /S/ and then hum at the same time.

2

Use the "buzzing bee" cue: have your child pretend to be a bee flying around and buzzing "zzzzz."

3

Place a hand on the throat to feel the vibration for /Z/ versus no vibration for /S/.

4

Practice /S/-/Z/ pairs: sip/zip, sue/zoo, sink/zinc, seal/zeal.

5

Since /Z/ appears at the end of many plurals (dogs, cows, bees), practice adding /Z/ to plural words.

6

Play "buzzing" games: move a toy bee around and buzz /Z/ whenever the bee lands on something.

7

If your child has a lisp on /S/, fix that first — /Z/ will often follow since it uses the same tongue position.

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Practice Sentences for the /Z/ Sound

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

The zebra zigzagged through the zoo.

Zach zipped his zipper on his fuzzy jacket.

The buzzy bees zoomed around the zinnia flowers.

My cousin is amazing at solving puzzles.

A dozen daisies grew in the garden by the roses.

The noisy lizard hid behind the freezer.

Please close your eyes and make a wish, said the wizard.

The fizzy soda made his nose sneeze.

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Games for the /Z/ Sound

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

bubble_chart

Bubble Pop

/Z/ practice

phishing

Sound Fishing

/Z/ practice

grid_view

Memory Match

/Z/ practice

local_pizza

Pizza Builder

/Z/ practice

rocket_launch

Space Blaster

/Z/ practice

directions_run

Word Runner

/Z/ practice

pest_control

Whack-a-Word

/Z/ practice

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Story Adventure

/Z/ practice

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

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

When should my child be able to say the /Z/ sound?expand_more
Most children master /Z/ by age 4-5. It typically develops around the same time as /S/ or shortly after, since they share the same tongue position.
My child can say /S/ but not /Z/. Why?expand_more
If your child can produce /S/ but not /Z/, the issue is usually with adding voicing. The tongue position is the same for both sounds. Practice having your child hum while in the /S/ position to learn the voiced version.
Does a lisp affect the /Z/ sound too?expand_more
Yes, since /Z/ and /S/ use the same tongue position, a lisp that affects /S/ will also affect /Z/. Correcting the tongue position for /S/ will typically fix /Z/ as well.
Why does my child drop the /Z/ at the end of words?expand_more
Final /Z/ is important because it marks plurals (dogs, cats), possessives (mom's, dad's), and verb forms (is, was, plays). Children may drop final /Z/ because it is harder to maintain voicing at the end of a word. Practice by emphasizing the buzzing at the end of words.
Should I work on /S/ or /Z/ first?expand_more
Most speech therapists start with /S/ because it is voiceless and slightly easier to teach in isolation. Once /S/ is accurate, adding voicing to create /Z/ is usually a natural next step.

Related Sounds

/S/

S Sound

View guide

/V/

V Sound

View guide

/SH/

SH Sound

View guide

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