Speech Sounds & Speech Clarity

Speech sounds are the individual sounds we use to make words. They are made by the voice box, tongue, lips, teeth and jaw working together, very fast, in the right order. Speech clarity — sometimes called intelligibility — simply means how easily other people can understand what your child says.

Speech sounds are not letters. Speech and Language UK give a helpful example: the word 'sheep' has five letters but only three sounds — 'sh', 'ee', 'p'. That is why a child can know their letters and still find some sounds hard to say.

Children learn speech sounds gradually, usually in a broadly similar order. Sounds made at the front of the mouth, such as 'b', 'm', 'p' and 'd', tend to come early. Later sounds — 'sh', 'ch', 'th', 'r', and clusters like 'spl' in 'splash' — often take until the infant or lower junior years to settle.

Along the way, most children simplify words in predictable ways: 'tat' for cat, 'gog' for dog, 'poon' for spoon. These patterns are a normal part of learning, and most fade on their own.

• Familiar people understand your child easily, but people outside the family often do not.
• Certain sounds are always swapped for another one, or left out of words.
• Longer words come out shorter — 'nana' for banana, 'efant' for elephant.
• Your child repeats themselves, gives up, or says "never mind" when not understood.
• They talk less with unfamiliar adults or in bigger groups.
• You find yourself translating for them.

Noticing these things does not mean something is wrong. It means you have useful information — and describing exactly what you notice is far more helpful to a professional than trying to name a condition.

There are several possible reasons, and often more than one is in play. Some children are still working through the normal pattern later than their friends. Some have had periods of reduced hearing — glue ear is common in young children and can make sounds muffled while it lasts. Some find the fine motor planning of speech genuinely hard. A few have a physical difference affecting the mouth, or a wider developmental picture.

Children growing up with more than one language are not more likely to have a speech difficulty. Sounds that do not exist in English may take longer to appear in English, which is a difference, not a disorder.

A child can be unclear to listen to and have excellent language. Another child can be perfectly clear and struggle to find words or follow instructions. Working out which is which changes what helps.

• Repeat back the part you did understand: "You went to the …?" — this shows you are listening and narrows what is left.
• Ask them to show you, point, or find it.
• Offer a choice: "Was it the park or the shop?"
• Ask for one word rather than the whole sentence.
• If you still do not get it, be honest and kind: "I really want to know — can we come back to it?" Guessing wrongly again and again is more disheartening than admitting it.

• Correcting sounds repeatedly in the middle of conversation — the message becomes 'how you say it matters more than what you say'.
• Asking a child to perform their speech for relatives.
• Telling them to slow down or try harder; effort is rarely the issue.
• Speaking for them when they were managing.
• Waiting silently for a long time because someone said they would grow out of it — many do, but a conversation with school or your GP costs nothing.

It is reasonable to ask for advice at any point — you do not need to reach a threshold first. It is particularly worth doing when your child is much harder to understand than others the same age, when they are frustrated or withdrawing from talking, when clarity has stopped changing over several months, or if you have any concern about their hearing.

• Speak to your child's teacher or the SENDCO, and describe examples.
• Ask your GP or health visitor about a hearing check — recent or repeated ear infections make this more important.
• NHS children's speech and language therapy is the service that assesses speech sounds. In many areas families can refer themselves; your GP, health visitor or school can tell you the local route.
• Waits vary considerably between areas, so it is worth asking early rather than waiting to be sure.

• Speech and Language UK — Ages and stages, and their family advice pages.
• RCSLT — public information on speech sound disorders.
• NHS — your local children's speech and language therapy service; search your area plus 'children's speech and language therapy'.
• NHS — Glue ear, if hearing may be part of the picture.

1. Royal College of Speech and Language TherapistsProfessional guidance
   Speech sound disorders — clinical guidance (updated 2024)

   The UK professional reference point. Explains that 'speech sound disorder' is an umbrella term used when a child's speech is much harder to understand than other children of the same age speaking the same language, and that sub-types differ in cause and in what helps.

2. Royal College of Speech and Language TherapistsProfessional guidance
   Position paper on Childhood Apraxia of Speech (CAS) (2024)

   Relevant only to a small minority of children. Useful for understanding why a few children need specialist, high-frequency motor-speech input rather than general classroom support.

3. Speech and Language UKProfessional guidance
   Speech sounds (resource library for educators)

   Plain-English explanation for school staff, including the point that speech sounds are not letters — 'sheep' has five letters and three sounds.

4. Speech and Language UKProfessional guidance
   Ages and stages

   Typical development by age band, with the standing caveat that children reach these stages at different rates. Use as a reference point, never as a checklist to score a child against.

5. NHS (Berkshire Healthcare NHS Foundation Trust)Professional guidance
   Typical speech sound development

   NHS speech and language therapy advice on the order sounds usually emerge — early sounds such as b, m, d before later ones such as 'ch', 'th' and clusters. Local NHS services publish similar pages; referral routes vary by area.

6. NHSProfessional guidance
   Glue ear

   Common in young children and can affect hearing while it lasts. One reason a hearing check is a sensible first step when speech is unclear.

7. Department for EducationStatutory guidance
   SEND Code of Practice: 0 to 25 years (2015)

   Places speech, language and communication within the communication and interaction area of need, and sets out the graduated approach — assess, plan, do, review — schools must follow.

8. Department for EducationStatutory guidance
   Early years foundation stage statutory framework (current version)

   Communication and language is a prime area; settings must provide a language-rich environment and back-and-forth interaction.

9. Department for EducationProfessional guidance
   The reading framework: teaching the foundations of literacy (2021, updated 2023)

   Relevant because phonics teaching and assessment rest on hearing and producing sounds. It sets out how to teach and check phoneme–grapheme correspondence, which is where unclear speech can be misread as a phonics gap.

10. Education Endowment FoundationResearch summary
    Preparing for Literacy: improving communication, language and literacy in the early years (2018)

    Recommends high-quality adult–child interaction and developing children's speech, language and communication. It is about the language environment, not about treating speech sound difficulties — that sits with speech and language therapy.

11. Education Endowment FoundationResearch summary
    Improving Literacy in Key Stage 1 (2017, updated)

    Places phonological awareness and language capability among the foundations of early reading and writing.

12. I CAN and RCSLTResearch summary
    Bercow: Ten Years On — an independent review of provision for children and young people with SLCN in England (2018)

    Documents variable identification and long waits for speech and language therapy in England, and argues for communication being everybody's business rather than a specialist add-on.