disallow

[ dis-uh-lou ]
/ ˌdɪs əˈlaʊ /

verb (used with object)

to refuse to allow; reject; veto: to disallow a claim for compensation.
to refuse to admit the truth or validity of: to disallow the veracity of a report.

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Origin of disallow

First recorded in 1350–1400; Middle English word from Old French word desallouer. See dis-1, allow

OTHER WORDS FROM disallow

dis·al·low·a·ble, adjectivedis·al·low·a·ble·ness, noundis·al·low·ance, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for disallowable

disallow
/ (ˌdɪsəˈlaʊ) /

verb (tr)

to reject as untrue or invalid
to cancel

Derived forms of disallow

disallowable, adjectivedisallowance, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012