The phrase "speaks well of" is commonly used to express a positive opinion or impression. Some possible synonyms for this phrase include "reflects positively on," "shows favorably upon," "speaks highly of," "compliments," "praises," "approves," "endorses," "recommends," "lauds," and "applauds." These terms can be used in a variety of contexts, such as describing a person's character, behavior, or accomplishments. Whether in personal or professional settings, using these synonyms can add depth and nuance to one's language and convey a more precise and nuanced message.