👉 Smarmiest is a term used to describe someone who is overly manipulative, cunning, or deceitful in their behavior and communication. It typically refers to someone who is often perceived as being manipulative by others, especially when it comes to their own interests or those of others. Smarminess can be defined as the ability to manipulate others into doing things they do not want, which can range from small acts (such as making a joke) to larger behaviors (such as manipulating a person