historical usage of unprecedented
What is remarkable about unprecedented is that the two earliest known citations appear with the spelling unpresidented, with an si. The first use of this word appears in a 1641 speech by John Finch, Speaker of the House of Commons (later Lord Keeper of the Great Seal) and a very partisan supporter of King Charles I, and the second recorded use was made by King Charles himself in 1642 in his reply to Parliament. It is not until the following year that we find the first printed instance of this word spelled correctly, with a ce, in a political pamphlet in opposition to Charles I, written by Henry Parker, a strong supporter of the British Parliament.
OTHER WORDS FROM unprecedentedun·prec·e·dent·ed·ly, adverbun·prec·e·dent·ed·ness, noun
How to use unprecedented in a sentence
The episode was also unprecedentedly dark—even for this show.‘The Walking Dead’ Season Finale Review of ‘A’: Rick Grimes Is a Murderer|Melissa Leon|March 31, 2014|DAILY BEAST
The United States had toppled the Taliban and cornered al Qaeda with record speed and an unprecedentedly small number of troops.How Bin Laden Escaped in 2001—The lessons of Tora Bora|Yaniv Barzilai|December 15, 2013|DAILY BEAST
This was an unprecedentedly practical attempt to hasten on the Last Days, that recurrent Protestant preoccupation.Why Won’t the West Defend Middle Eastern Christians?|Diarmaid MacCulloch|October 27, 2013|DAILY BEAST
This unprecedentedly hostile verdict is a sign that a dictatorship has taken power in Ukraine.
Our country has been unprecedentedly developed in consequence of the energy and progressiveness of its railway managers.Railroads: Rates and Regulations|William Z. Ripley
Our progress was slow, on account of the unprecedentedly low water in the Mississippi, and the scarcity of coal and wood.The Memoirs of General W. T. Sherman, Complete|William T. Sherman
At first I confined my researches to churches, palaces, and the museum, particularly as the weather was unprecedentedly bad.A Visit to the Holy Land, Egypt, and Italy|Ida Pfeiffer
It was an unprecedentedly dry season so that not merely the prairie, but many weedy cornfields burned.A Son of the Middle Border|Hamlin Garland
Its scale, they learned, was most magnificent, and the invitations unprecedentedly numerous.