Which term refers to the act of getting rid of something?

The term that accurately refers to the act of getting rid of something is "elimination." This word encompasses the process of removing or completely getting rid of an item, idea, or individual. It implies a thorough action aimed at producing a clean outcome, whether that's in a physical sense, such as removing clutter, or in terms of abstract concepts, such as eliminating a proposal in a decision-making context.

While "veto," "rejection," and "dismissal" all relate to denying or disapproving something, they do not carry the same broad connotation as "elimination." A veto specifically refers to the authority to reject a decision or proposal, while rejection can imply merely saying no without the connotation of intend to remove from consideration entirely. Dismissal often suggests the act of allowing something to be disregarded but doesn’t necessarily mean it has been removed or eliminated completely. Thus, "elimination" is the term that best captures the essence of completely getting rid of something.