unduke

From un- +‎ duke.

• Rhymes: -uːk

unduke (third-person singular simple present undukes, present participle unduking, simple past and past participle unduked)

1. (transitive) To deprive of dukedom.
   • 1711, Jonathan Swift, A New Vindication of the Duke of Marlborough:

     are they about to take the garter from him? to unprince, unduke him?

• “unduke”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.