dis·al·low 
/ˌdɪsəˈlaʊ/ verb
dis·al·lows; dis·al·lowed; dis·al·low·ing /ˌdɪsəˈlaʊ/ verb [+ obj] : 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.
▪ The court disallowed [=rejected] their claim. ▪ The touchdown was disallowed because of a penalty.
— dis·al·low·ance /ˌdɪsəˈlawəns/ noun [noncount]
▪ disallowance [=rejection] of the tax deductions
/ˌdɪsəˈlawəns/ noun [noncount] ▪ disallowance [=rejection] of the tax deductions
