Monkey disease, also known as simian immunodeficiency virus (SIV), is a term used to describe a group of viruses that affect primates, including monkeys and apes. While there are no true antonyms for this term, some words that could be considered opposites, or unrelated concepts, include health, wellness, vitality, and strength. As a virus that can potentially cause illness and weaken the immune system, monkey disease is a serious concern for those who come into contact with primates, which is why it's important to take precautions and protect yourself against exposure. However, there are many ways to promote health and well-being, such as exercise, healthy eating, and preventative care, that can help keep us strong and resilient.