Simple Definition of disallow

from our Learner's Dictionary

disallow

verb

disallows; disallowed; disallowing
: to refuse to allow (something) : to officially decide that (something) is not acceptable or valid
The court disallowed [=rejected] their claim.
The touchdown was disallowed because of a penalty.

Cite this Entry

“Disallow.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/disallow. Accessed 24 Jun. 2026.

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