Omission to do something, whether or not it was attempted, especially something that ought to have been done.
State or condition of not meeting a desirable or intended objective, opposite of success.
Bankruptcy.
An object, person or endeavour in a state of failure or incapable of success.
Termination of the ability of an item to perform its required function; breakdown.
A military action consisting of armed forces of one geopolitical entity entering territory controlled by another such entity, generally with the objective of conquering territory or altering the established government.
The breaching of the skin barrier.
The spread of cancer cells, bacteries and such to the organism.
The entry without consent of an individual or group into an area where they are not wanted.