dis·avow /ˌdɪsəˈvaʊ/
 (vt.)否認,否定,抵賴


 Dis·a·vow v. t. [imp. & p. p. Disavowed p. pr. & vb. n. Disavowing.]
 1. To refuse strongly and solemnly to own or acknowledge; to deny responsibility for, approbation of, and the like; to disclaim; to disown; as, he was charged with embezzlement, but he disavows the crime.
    A solemn promise made and disavowed.   --Dryden.
 2. To deny; to show the contrary of; to disprove.
 Yet can they never
 Toss into air the freedom of my birth,
 Or disavow my blood Plantagenet's.   --Ford.

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 disavow
      v : refuse to acknowledge; disclaim knowledge of; responsibility
          for, or association with; "Her husband disavowed her
          after 30 years of marriage and six children" [ant: avow]