When it comes to expressing the idea that someone was given permission or approval to do something, there are several synonyms for the phrase "was authorized". Some alternatives include "was permitted", "was granted authorization", "had the go-ahead", "was licensed", "was cleared to", "was sanctioned", "was empowered", "was entitled", "was certified", "was approved", and "was validated". Depending on the context and tone of the sentence or phrase, each of these synonyms can convey a slightly different nuance and emphasis, and can help to enhance the variety and richness of your writing.