IPA: /prəˈskaɪb/
KK: /prəˈskaɪb/
To officially forbid or prohibit something, often by law or authority.
The government decided to proscribe the use of certain chemicals in agriculture.
Past: proscribed
Past Participle: proscribed
Proscribe is formed from "pro-" (meaning before or in front of) and "scribere" (meaning to write). The word originally referred to writing something down in advance, particularly in the context of prohibiting or banning something.
Think of writing something 'before' ('pro-') to indicate that it is banned or prohibited — that's what proscribe means.