To nullify
To prevent (something) from being achieved.
To reduce, to nothing, the strength of.
To overcome in battle or contest.
The act or instance of being defeated, of being overcome or vanquished; a loss.
Frustration (by prevention of success), stymieing; (law) nullification.
The act or instance of defeating, of overcoming, vanquishing.
The planning stage of a project.
A plane surface or table to which paper can be fastened for drawing purposes.