The phrase "sheep's-eyes" is often used to describe a romantic or amorous look. However, there are several synonyms that can be used instead. Some examples of alternative phrases are "love-struck gaze," "gazing longingly," "adoring stare," "besotted look," "loving look," or "lovestruck expression." Each of these phrases conveys a similar meaning to "sheep's-eyes," but with slightly different connotations. For instance, "besotted look" has a stronger emphasis on infatuation, while "loving look" has a more tender and affectionate tone. Overall, using synonyms can help writers convey their intended meaning more precisely and effectively.