ST Sound Words
The ST blend joins the S and T sounds into one smooth cluster, with no extra vowel slipped in between.
Age of acquisition. S blends usually come together between ages 4 and 6, once the S sound itself is solid. Norms vary between children and between sources, so treat this as a rough guide, not a deadline. If you have concerns, an SLP can assess.
How to make it. Say the S and T sounds one right after another and blend them together, keeping them tight so no "uh" sneaks into the middle. A common early pattern is dropping a sound (saying 'top' for 'stop').
Phonological patterns. Hearing how the reduced word differs from the full cluster is a big part of fixing it. Practice T vs ST in Phonological Patterns.
How to practice the ST sound at home
- Start at the word level, then move to short phrases and sentences once the ST sound is easy on its own.
- Practice in short, frequent bursts. Five focused minutes a day beats one long weekly session.
- Model it first: say the word slowly, stretch the ST sound so your child can hear it, then have them copy you.
- Use the picture cards to keep it playful, and praise good tries, not just perfect ones.
ST sound questions
- What words have the ST sound?
- This page lists ST words grouped by position (beginning, middle, and end of the word) and by syllable count, each with a picture card and tap-to-hear audio. Scroll down for the full list.
- At what age should my child say the ST sound?
- S blends usually come together between ages 4 and 6, once the S sound itself is solid. Norms vary between children and between sources, so treat this as a rough guide, not a deadline. If you have concerns, an SLP can assess.