v. [UN-2 6 b.] trans. To deprive of the standing or character of a gentleman. Also refl.
1671. F. Philipps, Reg. Necess., 204. A man disenabled, or ungentlemand by reason of his Fathers attainder of Treason.
1713. Gentl. Instructed, III. vi. (ed. 5), 419. Some tell me home-breeding will ungentleman him.
1719. De Foe, Serious Refl., ii. 58. The minute he does that, he ungentlemans himself.
1752. Chesterf., Lett., Misc. Wks. 1777, II. 558. I am persuaded, that you do not give into this cochonnerie, which ungentlemans every body.