Speech Sound Library

Comprehensive speech therapy guides for every target sound. Each guide includes word lists, practice tips, sentences, and links to our interactive games.

/R/

R Sound

Mastered by age 6-7

The /R/ sound is one of the most commonly targeted sounds in speech therapy. It is a voiced liquid consonant produced by...

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/S/

S Sound

Mastered by age 5-7

The /S/ sound is a voiceless alveolar fricative and one of the most frequently occurring sounds in English. It is produc...

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/L/

L Sound

Mastered by age 4-6

The /L/ sound is a voiced alveolar lateral approximant. It is produced by placing the tongue tip on the ridge behind the...

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/TH/

TH Sound

Mastered by age 5-7

The /TH/ sound has two versions: the voiceless /TH/ (as in "think" and "bath") and the voiced /TH/ (as in "this" and "th...

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/SH/

SH Sound

Mastered by age 4-6

The /SH/ sound is a voiceless postalveolar fricative. It is produced by rounding the lips slightly and pulling the tongu...

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/CH/

CH Sound

Mastered by age 4-6

The /CH/ sound is a voiceless postalveolar affricate. It is a combination of /T/ and /SH/ produced in rapid succession. ...

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/K/

K Sound

Mastered by age 3-4

The /K/ sound is a voiceless velar stop (also called a plosive). It is produced by raising the back of the tongue to tou...

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/G/

G Sound

Mastered by age 3-4

The /G/ sound is a voiced velar stop. It is the voiced partner of /K/ and is produced by raising the back of the tongue ...

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/F/

F Sound

Mastered by age 3-4

The /F/ sound is a voiceless labiodental fricative. It is produced by gently placing the upper front teeth on the lower ...

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/V/

V Sound

Mastered by age 4-5

The /V/ sound is a voiced labiodental fricative and the voiced counterpart of /F/. It is produced in exactly the same mo...

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/Z/

Z Sound

Mastered by age 4-5

The /Z/ sound is a voiced alveolar fricative and the voiced counterpart of /S/. It is produced in the same tongue positi...

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/J/

J Sound

Mastered by age 4-6

The /J/ sound (as in "jump," not the /Y/ sound in "yes") is a voiced postalveolar affricate. It is the voiced counterpar...

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/P/

P Sound

Mastered by age 2-3

The /P/ sound is a voiceless bilabial stop. It is one of the earliest sounds children develop and is produced by pressin...

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/B/

B Sound

Mastered by age 2-3

The /B/ sound is a voiced bilabial stop. It is produced the same way as /P/ (both lips pressed together then released), ...

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/M/

M Sound

Mastered by age 2-3

The /M/ sound is a voiced bilabial nasal. It is produced by pressing both lips together (like /P/ and /B/) while directi...

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/N/

N Sound

Mastered by age 2-3

The /N/ sound is a voiced alveolar nasal. It is produced by placing the tongue tip on the alveolar ridge (the bumpy area...

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/D/

D Sound

Mastered by age 2-3

The /D/ sound is a voiced alveolar stop and the voiced partner of /T/. It is made by tapping the tongue tip against the ...

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/T/

T Sound

Mastered by age 2-4

The /T/ sound is a voiceless alveolar stop and the voiceless partner of /D/. It is produced by stopping the airflow with...

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/H/

H Sound

Mastered by age 2-3

The /H/ sound is a voiceless glottal fricative — the gentle, breathy sound of air passing through an open throat. There ...

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/NG/

NG Sound

Mastered by age 2-4

The /NG/ sound is a voiced velar nasal — the humming sound at the end of "sing," "long," and "running." The back of the ...

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/W/

W Sound

Mastered by age 2-3

The /W/ sound is a voiced glide made by rounding the lips into a tight circle and then sliding smoothly into the vowel t...

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/Y/

Y Sound

Mastered by age 3-4

The /Y/ sound is a voiced glide made by raising the middle of the tongue toward the roof of the mouth and sliding into t...

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/ZH/

ZH Sound

Mastered by age 7

The /ZH/ sound is a voiced postalveolar fricative — the buzzing sound in the middle of "measure," "vision," and "televis...

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Speech Sound Development Timeline

Not all sounds develop at the same age. Here is a general guide to when children typically master each sound.

Early Developing (Ages 2-3)

/P/P Sound/B/B Sound/M/M Sound/N/N Sound/D/D Sound/T/T Sound/H/H Sound/NG/NG Sound/W/W Sound

Mid Developing (Ages 3-6)

/L/L Sound/SH/SH Sound/CH/CH Sound/K/K Sound/G/G Sound/F/F Sound/V/V Sound/Z/Z Sound/J/J Sound/Y/Y Sound

Later Developing (Ages 5-7+)

/R/R Sound/S/S Sound/TH/TH Sound/ZH/ZH Sound

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