inadvertency

This inadvertency of having placed one for the other is a fault which must be corrected.
A Philosophical Dictionary, Volume 1 (of 10)|Franois-Marie Arouet (AKA Voltaire)
The delay, doubtless, was simply owing to inadvertency on the part of subordinate agents.
My Ten Years' Imprisonment|Silvio Pellico
In many instances, perhaps in the majority, young persons are guilty of this misconduct through inadvertency.
Female Scripture Biographies, Vol. I|Francis Augustus Cox
The name of the glorious God is greatly prophaned by this inadvertency.
Speeches, Addresses, and Occasional Sermons, Volume 2 (of 3)|Theodore Parker

I always paid for this inadvertency, however, it usually putting a stop to the communications for the time being.
Afloat And Ashore|James Fenimore Cooper

Origin of inadvertency