The term "am case" refers to a legal case heard in the morning as opposed to a "pm case" which is heard in the afternoon. Some synonyms for "am case" might include "morning case," "early case," or "daytime case." Other possible synonyms could include "daylight case," "sunny case," or "sunlit case." Some of these terms highlight the temporal aspect of the case, while others emphasize the light conditions of the courtroom. In any case, these synonyms can be used interchangeably to describe a case that is scheduled for the morning hours.