The term "committed memory" refers to the amount of memory that is in use by a computer application and cannot be accessed by other programs. Some antonyms for committed memory include idle memory, available memory, and free memory. Idle memory is the amount of memory that is not currently in use by any application, thus making it available for use. Available memory refers to the amount of memory that is not in use by applications but is readily accessible for use. Finally, free memory is the amount of memory that is not in use at all and is available for immediate use. Understanding these antonyms can help computer programmers to optimize their applications and improve computer performance.