a. (UN-1 7 b.)
1667. Milton, P. L., X. 366. This unvoyageable Gulf obscure.
1809–14. Wordsw., Excurs., V. 342. Here standing, with the unvoyageable sky … Stretched overhead.
1853. Ruskin, Stones Ven., II. 10. The lifeless, impassable, unvoyageable plain.
