invalid
/ɪnˈvælɪd/
adjective
- Not legally or officially acceptable; having no legal force.
- The judge ruled that the evidence was invalid due to improper handling.
- Her passport was invalid, so she could not board the plane.
- The contract was declared invalid because it was not signed.
- Not true or correct; based on faulty reasoning.
- The scientist proved the theory invalid with a simple experiment.
- That excuse is invalid; you had plenty of time to finish the work.
- His argument was invalid because it relied on outdated statistics.
Antonyms
noun
- A person who is very weak or sick and needs constant care.
- The old invalid spent most of the day in bed.
- After the accident, he became an invalid and could not walk.
- The nurse cared for the invalid with great patience.