disavow - definition and synonyms

verb [transitive] formal 

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/ˌdɪsəˈvaʊ/
present tense
I/you/we/theydisavow
he/she/itdisavows
present participledisavowing
past tensedisavowed
past participledisavowed
  1. to say firmly that you have no connection with someone or something or no responsibility for them