Antonyms for the word "test runs" include permanent, established, finalized, and proven. Unlike "test runs," these words denote a level of development, stability, and reliability. A permanent solution has been implemented, indicating that there is no need for a trial period. Established methods are time-tested and have a track record of success. Finalized strategies have been thoroughly evaluated and adjusted, and are now ready for implementation. By contrast, "test runs" imply that an idea, product, or process is still in its experimental stage, and may be subject to change or failure. Using antonyms such as permanent, established, finalized, and proven can highlight a level of confidence, stability, and security in a given situation.