When it comes to synonyms for the phrase "am to", there are several options available depending on the context. For example, "am supposed to" is a common alternative, meaning that someone is expected or required to do something. "Am scheduled to" can also be used when referring to a planned event or appointment. Another possible synonym would be "am obligated to", which implies a sense of duty or responsibility towards a task or person. Other options might include "am instructed to", "am directed to", or "am mandated to", all of which suggest a specific order or command that must be followed. Ultimately, the choice of synonym will depend on the specific situation and intended meaning of the phrase.