From Longman Dictionary of Contemporary Englishdisavowdis‧a‧vow /ˌdɪsəˈvaʊ/ verb [transitive] formal NOT KNOWFAULT/BE somebody'S FAULTto say that you are not responsible for something, that you do not know about it, or that you are not involved with it —disavowal noun [countable, uncountable]→ See Verb table
Examples from the Corpus
disavow• But the government is unlikely to press ahead with what the Academy has disavowed.• Ten federal researchers were listed as contributors, but seven of them quickly disavowed any connection with it.• The bus drivers' union has disavowed any involvement in the violence.• We saw too the marked trend to disavow deviance amongst the women whose personal histories are discussed in Chapter 2.• Barbara was subjected to heinous torture, yet refused to disavow her faith.• Could he disavow his father and live?• Acknowledging the confusion, the Supreme Court in 1990 disavowed its earlier opinions and announced a new approach. 