English

Definition of disallow verb from the Oxford Advanced Learner's Dictionary

 

disallow

 verb
verb
BrE BrE//ˌdɪsəˈlaʊ//
 
; NAmE NAmE//ˌdɪsəˈlaʊ//
 
Verb Forms present simple I / you / we / they disallow
BrE BrE//ˌdɪsəˈlaʊ//
 
; NAmE NAmE//ˌdɪsəˈlaʊ//
 
he / she / it disallows
BrE BrE//ˌdɪsəˈlaʊz//
 
; NAmE NAmE//ˌdɪsəˈlaʊz//
 
past simple disallowed
BrE BrE//ˌdɪsəˈlaʊd//
 
; NAmE NAmE//ˌdɪsəˈlaʊd//
 
past participle disallowed
BrE BrE//ˌdɪsəˈlaʊd//
 
; NAmE NAmE//ˌdɪsəˈlaʊd//
 
-ing form disallowing
BrE BrE//ˌdɪsəˈlaʊɪŋ//
 
; NAmE NAmE//ˌdɪsəˈlaʊɪŋ//
 
 
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disallow something [often passive] (formal) to officially refuse to accept something because it is not valid to disallow a claim/an appeal The second goal was disallowed. The court will disallow evidence obtained through torture. compare allow (6) Word Origin late Middle English (in the sense ‘disown, refuse to accept’): from Old French desalouer.
See the Oxford Advanced American Dictionary entry: disallow