Since 'stupid' just means lacking intelligence and 'retarded' entails lacking intelligence (mental processing speed is part of what makes intelligence what it is), they are not completely unrelated, though it is acknowledged that actual retardation is deeper and more comprehensive than mere stupidity. While not precise synonyms, they are as close as any other for casual use.
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
no subject
Date: 2008-Sep-21, Sunday 09:05 pm (UTC)