Stuffed-shirted is an adjective often used to describe a person who is formal, stiff, and arrogant. However, there are many other words that could be used in place of this expression. Synonyms for stuffed-shirted include pompous, overbearing, conceited, pretentious, haughty, self-important, and snobbish. These words imply a sense of superiority or arrogance that would not be appreciated by many people. Other words that can be used to replace stuffed-shirted include rigid, inflexible, uptight, and stuffy. These words are often used to describe people who are overly concerned with following the rules and sticking to tradition, and who are not open to new ideas or ways of thinking.