Nugatory (adjective)

Having no value or importance; insignificant; worthless.

Origin:

From latin "nugatorius" meaning "trifling" or "worthless".

Examples:

1. The court declared the contract to be nugatory.
2. The argument was found to be nugatory and was ignored by the board.
3. The evidence presented was deemed nugatory and did not change the outcome of the trial.
4. Nugatory attempts were made to fix the broken machine.
5. The nugatory expenses were recorded and later discarded.