deplumation

The stripping or falling off of plumes or feathers.

[…] through the violence of her moulting, or deplumation, she comes into this earthly body deprived of that blessed life which she before enjoyed.

Loss of the eyelashes due to disease of the eyelids.

Systemic symptoms include headache, anorexia and sometimes nausea, vomiting, tinnitus and deafness, and deplumation or bleaching of the hair may occur.

I hope now the violence both of his tartian [=tertian] ague & feaver & the deplun [=deplumation], which has been so troublesome in his eyes as since his last writing to your worships to quite deprive him of his sight, is gone of

The stripping of someone's symbol(s) of status and prestige; humiliation.

If any person wishes to see one of the most neat, elegant, and at the same time thorough cases of deplumation, any where to be found in literary history, in which an individual who strutted on to the stage as a peacock, was soon obliged to leave it as a dove, he has only to read Dr. Beck's articles in "The Literary World," in which the fabricated quotation of Mr. Webster, and Professor Felton's defence of it, are shown to be exceedingly bad as Latin, and much worse as logic.

If the humiliation and baseness of such an acquiescence would not have revolted the self-love and pride of a man like Sir Philip Francis, at any rate he was not a fool, and the mere risk of detection and deplumation, which might have happened any day, would have prevented him from enduring his false feathers.