The phrase "gotten the beam" is typically used to describe the moment when someone finally understands something or becomes more aware of a situation. However, there are several synonyms that can be used interchangeably with this phrase. For example, someone may "have an epiphany," "see the light," or "gain insight." They might "realize" or "apprehend" something, or "comprehend" the situation better. Other synonyms include "grasp," "get a handle on," or "figure out." All of these phrases can be used to convey the idea that someone has become more aware or knowledgeable about something.