The word "more overtaxing" implies an excessive workload or burden. To find an antonym, one can look for words that signify relief or ease. Some potential antonyms include "restful," "relaxing," "restorative," "rejuvenating," or "refreshing." Other options might include "peaceful," "tranquil," "serene," "calming," or "soothing." In contrast to the demanding nature of "more overtaxing," these words suggest a state of rest or tranquility that can help restore balance and promote renewal. Ultimately, the best antonym for "more overtaxing" will depend on the context and specific meaning of the phrase in question.