The action or an act of preventing the progress, success, or realization of something; an instance of frustrating a purpose or plan.

The prevention of the progress, success, or realization of something; frustration of a plan or purpose; an instance of this. Cf. defeat, n. 3.

The prevention of the progress, success, or realization of something; frustration of a plan or purpose; an instance of this. Cf. defeat, n. 3.