Meaning of 'Retarded' or even 'Retarted'?

what is the meaning of retarded? I just confused when somebody said ‘YOU ARE RETARDED’.

The basic meaning of “retarded” is “delayed or held back (in progress or development)”. When used of people, it means “slow or limited in intellectual or emotional development or academic progress”. However, the word in this sense is now considered offensive, and is used mostly as an insult (“you are retarded” = “you are an idiot/moron/etc.”). Avoid using it.

(In other senses, “retarded” is OK to use, but is a fairly technical word. For example, you could say “the plant’s growth was retarded by lack of light”.)

There is no such word as “retarted”.

okay, I got it.
thanks, but what if the word ‘RETARTED’ is used in sentences where the subject is myself?
example;
‘‘sorry, I can
not understand your intentions, maybe because I am retarded’’
if this can also be defined as an insult? in other words, insulting
myself? I will try to avoid the word. but, whether
‘’ I am retarded’’

not better than

‘‘I am I’m idiot / stupid ect’’? . . .
thanks

Sure, you can use “I am retarded” or “I am a retard” as an excuse.
It’s very self-deprecating though, and very off-putting, as I’m sure you understand. Just to get an understanding of what a retarded person looks like, google “retarded person” and switch to “IMAGES”.

Note that it is spelled “retarded”, not “retarted”.

I googled it, and google showing such idiot persons. thanks for your explanation (explaining?)

yeah, I meant retarded. sorry, retarded was a new strange word for me ( I usually using IDIOT). I’ll learn to spell it better . thank you