1In her seminal work, the author expatiates upon the implications of postmodernism for contemporary society.
2The professor's tendency to expatiate on tangential points often left students struggling to follow the main argument.
3The novelist's use of descriptive language allows her to expatiate upon the inner lives of her characters.
4Avoid expatiating on minor details in your thesis introduction; focus on clearly stating the research question and methodology.
5There is a delicate balance between providing sufficient context and expatiating to the point of obscuring the central thesis.