The spelling of the word "retardated" is incorrect. The correct spelling is "retarded". It is pronounced as [ri-tahr-did] in IPA phonetic transcription. The word is an adjective used to describe a person with a developmental disability or delay. However, while the term was once commonly used, it is now considered outdated and offensive. It is important to use more respectful and appropriate language when discussing people with disabilities.
The word "retardated" is not a standard English word with an established etymology. It appears to be a form of the adjective "retarded", which itself has an etymology. The term "retarded" originated from the Latin word "retardare", meaning "to delay" or "to hold back". It emerged in the English language in the late 19th century and originally referred to the slowing or delay in someone's mental or physical development. However, over time, the term has become derogatory and offensive when used to describe individuals with intellectual disabilities. It is important to note that the use of such a term is considered insensitive and disrespectful.