At What Age Should Autism Be Suspected if Speech Is Delayed? 

Parents often ask: what’s the right age for delayed speech in autism to become a concern? While every child develops at their own pace, certain patterns in speech and communication may raise red flags, especially in toddlers. If a child isn’t using single words by around 16 months, or isn’t combining two words by age 2, it may be time to take a closer look. 

Not every speech delay means autism, but when delays are paired with signs in social interaction or behaviour, professionals may start considering an autism diagnosis. Recognising this early can make a real difference, as early diagnosis allows for support that aligns with each child’s individual needs. 

When to Watch More Closely 

Knowing when to act can help avoid unnecessary worry, and ensure no valuable time is lost. Here’s what to look out for: 

Delayed speech beyond key ages 

By 12 months, most babies use sounds and gestures. By 18 months, they’re typically using simple words. A gap here, especially if paired with limited eye contact or pointing, may indicate a deeper issue related to the age for delayed speech in autism. 

Limited toddler communication and social cues 

A child who isn’t using gestures, showing objects, or responding to their name by age 2 may be showing more than a simple speech delay. These signs could reflect wider gaps in developmental milestones and social communication. 

Getting answers early helps shape effective, personalised support. For concerns around the age for delayed speech in autism, visit providers like Autism Detect for personal consultations and early screening. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Delayed Speech or Language Development.

Lucia Alvarez, MSc

Author

Lucia Alvarez is a clinical psychologist with a Master’s in Clinical Psychology and extensive experience providing evidence-based therapy and psychological assessment to children, adolescents, and adults. Skilled in CBT, DBT, and other therapeutic interventions, she has worked in hospital, community, and residential care settings. Her expertise includes grief counseling, anxiety management, and resilience-building, with a strong focus on creating safe, supportive environments to improve mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy. 

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy.