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.
Left to decide what part of the 1996 Act to strike as invalid, the court concluded that congressional intent regarding severability was unclear.
That assumption becomes invalid if highly skilled people can hide their abilities in an attempt to defraud the system.
An internal control plasmid to measure transfection efficiency could not be used because C/EBPβ regulates transcrption from the control plasmid, and thus makes the internal control invalid.
The EAB found that "no polling place was considered to have had a poll that was unacceptable or invalid."