There are several synonyms for the term "personal manner," which is defined as an individual's way of behaving or speaking. One synonym is "personality," which refers to the traits, qualities, and behaviors that make up a person's character. Another synonym is "behavior," which points to the actions and reactions of an individual in various situations. "Demeanor" is another synonym that signifies the outward appearance and attitude of a person. "Style" is also an appropriate term to use as a synonym for personal manner, as it refers to the unique way in which an individual expresses themselves or carries themselves. Ultimately, these terms can be used interchangeably to convey the same idea of a person's distinct way of being.