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Webster 1913 Edition

Adj.

[Pref.

un-

rude

. In sense 2

un-

is intensive.]

Not rude; polished.

Herrick.

Excessively rude.

[Obs. & R.]

“See how the unrude rascal backbites him.”

B. Jonson.

unrude ‎(comparative more unrude, superlative most unrude)

Not rude.
"Manners knows distance, and a man unrude / Would soon recoil, and not intrude / His stomach to a second meal." — Robert Herrick.