Antonyms for "more work saving" include "less efficient," "ineffective," "inefficient," "time-consuming," and "laborious." These antonyms imply that the process or technology involved in completing a task requires more time, effort, and resources than necessary, and results in a less than optimal outcome. In contrast to "more work saving," these antonyms indicate a need to streamline processes and find more efficient ways of getting things done. By implementing more effective solutions and reducing inefficiencies, individuals and businesses can save time, energy, and resources, ultimately increasing productivity and achieving better results.