Someone who is exceptionally skilled and proficient at everything they do is often referred to as a "polymath" or a "Renaissance person." A polymath is an individual with expertise in a wide range of fields, displaying mastery or knowledge across diverse subjects. The term "Renaissance person" is derived from the Renaissance period when individuals like Leonardo da Vinci demonstrated exceptional talent in various areas such as art, science, engineering, and more. Both terms are used to describe someone with versatile abilities and a broad range of knowledge and skills.