The phrase "moon on" often refers to the act of staring at or gazing upon the moon. There are several synonyms that can be used to describe this act, such as "moon-watch," "moon-gaze," "moon-stare," or "moon-observe." Additional synonyms include "lunar contemplation," "moon-glimpse," and "moon-peek." Each of these terms conveys a slightly different connotation, but all describe the simple act of looking up at the moon and taking in its beauty and mystery. So, whether you prefer to moon-watch from your backyard or to moon-gaze while walking along the beach, there's a synonym that will perfectly capture your experience.