Antonyms for the phrase "put in jeopardy" would be words that convey a sense of safety, certainty, and security. Words such as protect, safeguard, defend, secure, preserve, and shield would be the antonyms for "put in jeopardy." For example, if someone is taking measures to protect their assets, they are not putting them in jeopardy. If a company is implementing safeguards to prevent cyber-attacks, they are not putting their confidential information in jeopardy. These antonyms convey a sense of protection and safety and imply that the person or entity is taking proactive steps to mitigate risk and ensure a secure environment.