Slow wittednesses can be replaced by a number of synonyms depending on the context in which it is being used. Some of the synonyms for slow wittednesses are mental retardation, intellectual disability, cognitive impairment, developmental delay, and learning difficulty. Each of these terms holds varying degrees of offensiveness, and it is important to choose the appropriate synonym based on the sensitivity of the situation. While slow wittednesses may be perceived as an insensitive term in modern times, it is important to remember that not all people have the same cognitive abilities, and we should always treat others with respect and empathy.