Definition: "Flummoxes" is a slang term that refers to people who are unable or unwilling to communicate effectively in certain situations. It can be used to describe someone who speaks slowly, hesitates, or seems unsure of their words. "Flummoxes" can also refer to a person's inability to follow instructions or understand complex information. In some cases, the term may also be used as a way to describe an individual who is very slow-witted or unable to think critically.