The Collaborative International Dictionary
Disacknowledging
Disacknowledge \Dis`ac*knowl"edge\, v. t. [imp. & p. p.
Disacknowledged; p. pr. & vb. n. Disacknowledging.]
To refuse to acknowledge; to deny; to disown. [Obs.]
--South.
Wiktionary
disacknowledging
vb. (present participle of disacknowledge English)