There are several synonyms for the phrase "prodigal returned" that convey a sense of someone who has returned from a period of wastefulness or indulgence. One option is "returned to the fold," which suggests a sense of coming back to one's roots or returning to a more responsible, disciplined way of life. "Reformed" or "rehabilitated" are also suitable synonyms, as they imply that the person has undergone a significant change and is now focused on living a more productive and meaningful life. "Recovered" is another possible synonym, which suggests that the person has overcome a particular challenge or addiction and has returned to a healthier state of being.