A functioning alcoholic is someone who has a drinking problem but is able to maintain their daily responsibilities, such as work or family, while continuing to consume alcohol. These individuals may appear to be functioning well in their daily lives, but they still suffer from the negative consequences of alcohol abuse, such as health problems, relationship issues, and financial difficulties. It is important to note that even though a person may appear to be functioning, their alcohol use can still be damaging to their overall well-being and should be addressed.