"Trusteed" is a term commonly associated with the act of entrusting someone with a responsibility or power. There are many synonyms that can be used in place of this word to add variety and clarity to one's writing. Some possible alternatives include "delegated," "assigned," "authorized," "entrusted," "empowered," "commissioned," "consigned," "handed over," "vested," and "appointed." Each of these words has its own unique connotations and shades of meanings, and choosing the right synonym depends on the context in which it is used and the tone that the writer wishes to convey. Ultimately, using a variety of synonyms can help to keep writing fresh and engaging while also sharpening one's vocabulary skills.