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disallow

[dis-uh-lou] /ˌdɪs əˈlaʊ/
verb (used with object)
1.
to refuse to allow; reject; veto:
to disallow a claim for compensation.
2.
to refuse to admit the truth or validity of:
to disallow the veracity of a report.
Origin of disallow
1350-1400
First recorded in 1350-1400; Middle English word from Old French word desallouer. See dis-1, allow
Related forms
disallowable, adjective
disallowableness, noun
disallowance, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for disallow

disallow

/ˌdɪsəˈlaʊ/
verb (transitive)
1.
to reject as untrue or invalid
2.
to cancel
Derived Forms
disallowable, adjective
disallowance, 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
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Word Origin and History for disallow
v.

late 14c., "to refuse to praise," from Old French desalouer "to blame," from des- (see dis-) + alouer (see allow); meaning "to reject" is from 1550s. Related: Disallowed; disallowing; disallowance.

Online Etymology Dictionary, © 2010 Douglas Harper
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