More recently, the acceptable term for retard is "developmentally delayed".2. A person who is considered to be foolish or socially inept: The child on the playground was rude, calling a boy a retard because he could not run very fast.
3. A slowing down or a hindering of progress; a delay: Being ill for several weeks was unfortunate as it caused a retard in Bill's academic progression towards his degree.
2. To re-smear someone with a distillation of resinous woods, coal, etc. and then to cover with feathers as a punishment: You would think that having been tarred and feathered last week, Lou would learn his lesson; however, he was retarred today because he tried to steal a loaf of bread.
The road had been retarred and the pavement was soft and served to retard the progression of Bruce's car as he was trying to drive home. He was upset and muttered something about the engineer in charge being a retard.