When describing someone who is less intelligent, there are several synonyms that can be used to avoid using the phrase "more dull-witted." Some options include "less bright," "less sharp," "less quick-witted," "less clever," and "less astute." These phrases can help to convey the same meaning without potentially offending or insulting someone's intelligence. It's important to choose words carefully and thoughtfully in order to avoid negative connotations and unnecessary hurt or offense. By using synonyms and alternative phrasing, we can communicate our thoughts and feelings in a more respectful and considerate way.