High IQ refers to a level of intelligence that exceeds average intelligence. This term is often used to describe individuals who have exceptional cognitive abilities, a great memory, analysis and synthesis skills, and critical thinking abilities. However, there are many other words that can be used to describe a high IQ individual or a person with a superior intellect. Words such as clever, smart, quick-witted, astute, sharp, knowledgeable, intellectual, proficient, and insightful are all synonyms for high IQ. These words help to paint a picture of a person who possesses a wide range of skills, flexibility in thinking, and the ability to solve problems effectively.