• Webster's Revised Unabridged Dictionary
    • v. t Disennoble To deprive of that which ennobles; to degrade. "An unworthy behavior degrades and disennobles a man."
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Century Dictionary and Cyclopedia
    • disennoble To deprive of title, or of that which ennobles; render ignoble; degrade.
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Chambers's Twentieth Century Dictionary
    • v.t Disennoble dis-en-nō′bl to deprive of title, or of what ennobles: to degrade.
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In literature:

No democratic revolution can disennoble me.
"The Parisians, Complete" by Edward Bulwer-Lytton