Webster's Revised Unabridged Dictionary · 1913

Unrude

Unrude , adjective

[Prefix un- + rude. In sense 2 un- is intensive.]

1.
Not rude; polished. — Herrick
2.
Excessively rude. [Obsolete & Rare]
See how the unrude rascal backbites him. — B. Jonson