D defs.my
Entry 2 senses Webster, 1913

Disavow

/dĭsˌ-əv-ou'/ · Dis·a·vow · IPA /dɪsəˈvaʊ/
01 v. t. To refuse strongly and solemnly to own or acknowledge; to deny responsibility for, approbation of, and the like; to disclaim; to disown; as…
imp. & p. p. Disavowed; p. pr. & vb. n. Disavowing
  1. 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. 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.