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Webster 1913 Edition

Adj.

Not decked; unadorned.

[Eve]

undecked

, save with herself, more lovely fair Than wood nymph.

Milton.

Not having a deck;

as, an

undecked

vessel

, pp.

Deprived of ornaments.

a. Not decked; not adorned.

undecked ‎(not comparable)

Having no deck.
- 1824, William Stevenson, Robert Kerr's General History and Collection of Voyages and Travels, Volume 18:
  The vessels, which were fitted out entirely for coasting voyages, were large, undecked, the seams fastened with cords made of the cocoa fibres, and the timbers in the same manner.
unadorned
undecked, save with herself, more lovely fair — Milton.