unprecedental en · ADJ
Etymology
From un- + precedent + -al.
Meanings
-
(not-comparable, obsolete) unprecedented
The growing of sugar in the West Indies is one of the few industries that has not shown unmistakable signs of “shrinkage” during this late unprecedental continuance of bad times.
1881, “The Sugar Bounties Question”, in The Westminster Review, volume 116, page 123: