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English definition of “disallow”

disallow

verb [T]     /ˌdɪsəˈlaʊ/
to state officially that something cannot be accepted or allowed , because it has not been done in the correct way: The monopolies legislation disallows mergers of major companies within one industry . disallow claims / deductions / regulations
(Definition of disallow verb from the Cambridge Business English Dictionary © Cambridge University Press)
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