The Collaborative International Dictionary of English v.0.48:
Proscribe \Pro*scribe"\, v. t. [imp. & p. p. Proscribed; p.
pr. & vb. n. Proscribing.] [L. proscribere, proscriptum, to
write before, to publish, proscribe; pro before + scribere to
write. See Scribe. The sense of this word originated in the
Roman practice of writing the names of persons doomed to
death, and posting the list in public.]
1. To doom to destruction; to put out of the protection of
law; to outlaw; to exile; as, Sylla and Marius proscribed
each other's adherents.
Robert Vere, Earl of Oxford, . . . was banished the
realm, and proscribed. --Spenser.
2. To denounce and condemn; to interdict; to prohibit; as,
the Puritans proscribed theaters.
The Arian doctrines were proscribed and
anathematized in the famous Council of Nice.