To vilify someone means to:

To vilify someone means to malign or defame them. This term originates from the Latin word "vilis," meaning cheap or lowly, and it conveys the act of speaking about someone in a derogatory manner. When someone vilifies another, they are deliberately spreading negative information or opinions that can harm that person’s reputation or character. This can include making false accusations or exaggerated claims designed to damage someone's standing.

In contrast, speaking highly of someone refers to praising them, supporting someone publicly is about endorsing or backing them, and encouraging collaboration involves promoting teamwork and cooperation. These meanings are antithetical to vilification, emphasizing that vilification is a negative and harmful action aimed at disparaging an individual rather than supporting or uplifting them.