Words similar to invalid

Example sentences for: invalid

How can you use “invalid” in a sentence? Here are some example sentences to help you improve your vocabulary:

All invalid tests must be repeated with a newly collected sample.
That part of the will was declared invalid by a judge, and the interested parties, not wishing an extensive romp in the courts, agreed to a compromise whereby the sum of ¥8,300 was set aside for the development of the new alphabet Shaw called for and for the publication in it of Androcles and the Lion . (Not utterly irrelevant here are these words on page 32 of Shaw's Everybody's Political What's What?
For WET test data submitted under NPDES permits, all required test conditions must be met or the test is considered invalid and must be repeated with a newly collected sample.
Thus, the relationship between ATF-2 and the GCN5-like acetyltransferase superfamily seems to be invalid, leaving the structural basis for the reported acetyltransferase activity of ATF-2 an open issue.
There's a hybrid technological and legal approach that might be more effective, and thus more likely to be the sort of "less restrictive alternative" that would make the total ban invalid.