invalidates; invalidated; invalidating
: to make (something) invalid: such as
a
: to weaken or destroy the effect of (something)
actions that will invalidate the contract
invalidate a marriage
invalidate an election
b
: to show or prove (something) to be false or incorrect
The study invalidates earlier theories.
factors that may invalidate the test results
Cite this Entry
“Invalidate.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/invalidate. Accessed 18 Jun. 2026.
Copy Citation
