The term "I.Q." stands for Intelligence Quotient, which is a measure of a person's mental abilities. Some antonyms for this word could include ignorance, stupidity, inadequacy, and unintelligence. While these words may seem harsh, they represent the opposite end of the spectrum from I.Q. and can highlight the importance of education and continued learning. It is essential to remember that individuals have different strengths and weaknesses, and intelligence is not purely measured by a test score. A person's emotional intelligence, social skills, and creativity are also crucial factors in defining intelligence. Hence, it is important to avoid using antonyms for I.Q. that promote negative stereotypes or discrimination.