Which word means to praise someone enthusiastically?

The term that refers to praising someone enthusiastically is "extol." When you extol someone, you are expressing vigorous and enthusiastic approval and admiration for their qualities or achievements. This word is often used in contexts where someone wants to highly commend another person for their actions, talents, or contributions, emphasizing the strong appreciation and recognition being conveyed.

In contrast, "entreat" means to ask someone earnestly or anxiously to do something, which does not carry the same connotation of praise. "Sway" refers to the act of influencing someone’s decisions or opinions, and "desist" means to stop doing something. Each of these terms has a distinct meaning that does not align with the concept of enthusiastic praise, making "extol" the appropriate choice for this question.