The word “vacillate” means to waver or be indecisive between different opinions, choices, or actions. It refers to the act of being uncertain or hesitant.
Interesting fact: The word “vacillate” comes from the Latin word “vacillare,” which means “to sway” or “to stagger.” It is derived from the image of a person physically swaying back and forth, reflecting the mental state of indecision.