The phrase "of mind" refers to the mental state or attitude of an individual. There are several synonyms used to describe a person's frame of mind, including mood, temperament, disposition, outlook, and mentality. Mood refers to the prevailing emotional state of a person, while temperament is the natural tendency to behave or react in a certain way. Disposition refers to a person's general demeanor or attitude towards life, and outlook describes a person's perspective or point of view. Mentality refers to a person's overall mindset or way of thinking. In summary, these synonyms for "of mind" provide a nuanced understanding of a person's mental and emotional state.