Antonyms for the term "more timesaving" can vary depending on the context. However, some commonly used antonyms include "less efficient," "time-consuming," "tedious," "laborious," "time-wasting," and "inefficient." These terms can be used to describe a process or tool that is not as effective or quick as the one implied by "more timesaving." For instance, a complicated software that takes longer to execute a task and requires more manual inputs is less efficient and more time-consuming than a simpler tool that automates the same process. In other words, the antonyms for "more timesaving" often refer to the opposite qualities of speed, efficiency, and ease of use.