Simple Definition:

Retarded means having a delay or impairment in mental or physical development [when someone’s mind or body takes longer to grow or learn].

For example:

• A child with Down syndrome may have some level of retardation, meaning they may take longer to develop certain skills like walking or talking.
• After a traumatic brain injury, a person may experience retardation and struggle with memory and cognitive functions.

Very Simple Definition:

Retarded means having a delay or problem with learning or growing.

For example:

• Some children need extra help in school because they are retarded and need more time to understand things.
• People with certain disabilities may be considered retarded because their brains work differently and they need extra support.