There are various synonyms for the phrase "change one's expression," which can be used in different contexts to convey a range of emotions. Some of the most common synonyms include shifting one's mood, altering one's demeanor, modifying one's countenance, transforming one's look, adjusting one's face, adjusting one's visage, varying one's expression, adjusting one's features, evolving one's facial expression, and adapting one's appearance. These synonyms can help add depth and nuance to writing and can be particularly useful in conveying character development or mood changes in storytelling or fiction. Whether it's a subtle shift or a dramatic transformation, using alternative phrasing can help paint a vivid picture.
