What is a synonym for "to satisfy completely"?

The term "satiate" is a synonym for "to satisfy completely," as it conveys the idea of fully fulfilling a need or desire, particularly in the context of appetite or emotional fulfillment. When someone is satiated, they have received enough to feel completely satisfied, whether that be with food, information, or any other resource. This word inherently communicates the concept of completeness in satisfaction, making it the most suitable choice among the options provided.

In contrast, the other options do not share this meaning. "Skeptical" relates to doubt or questioning, "severance" pertains to the act of cutting off or separating, and "sanctimonious" describes a self-righteous or hypocritically pious attitude. None of these terms connect to the idea of complete satisfaction.