Definition of "proscribe"
verb
third-person singular simple present proscribes, present participle proscribing, simple past and past participle proscribed
(transitive) To denounce.
Quotations
If Joseph Willet, the denounced and proscribed of 'prentices, had happened to be at home when his father's courtly guest presented himself before the Maypole door— [...] he would have contrived, by hook or crook, to dive to the very bottom of Mr. Chester's mystery, and to come at his purpose with as much certainty as though he had been his confidential adviser.
1841 February–November, Charles Dickens, “Barnaby Rudge”, in Master Humphrey’s Clock, volume III, London: Chapman & Hall, […], chapter 13, page 1