The word "precarious" refers to something that is uncertain or unstable in terms of safety or security. Its antonyms are words that signify stability, security, and safety. Some antonyms for precarious are certain, stable, secure, reliable, safe, strong, firm, and steady. These words convey a sense of confidence and reassurance, the opposite of the anxiety and doubt associated with precariousness. Using these antonyms can help people communicate more accurately while describing a situation or object that is known to be safe and secure. It is important to have an understanding of the antonyms of a word to have a clearer and more precise definition of it.