Unheard of

Also found in: Legal, Idioms.
References in classic literature ?
It will itself be ashamed of its imaginings, but yet it will recall it all, it will go over and over every detail, it will invent unheard of things against itself, pretending that those things might happen, and will forgive nothing.
It dawned upon me that since the evening of our return I had not been near him or the ship, which was completely unusual, unheard of, and well calculated to startle Dominic.
Captain Wentworth, after being unseen and unheard of at Uppercross for two whole days, appeared again among them to justify himself by a relation of what had kept him away.
Such a thing was unheard of, and it clouded their superstitious minds with all manner of vague fears.
It was like Marmee to get up a little treat for them, but anything so fine as this was unheard of since the departed days of plenty.
Exactly so, indeedquite unheard of but some ladies say any thing.
Nevertheless, his ferocity and cruelties were so great and so unheard of that, after endless single murders, he killed a large number of the people of Rome and all those of Alexandria.
The man, under pretence of going a journey, took lodgings in the next street to his own house, and there, unheard of by his wife or friends, and without the shadow of a reason for such self-banishment, dwelt upwards of twenty years.
He cannot brook the slightest appearance of defiance, and has remained the irreconcilable enemy of ships and men ever since ships and men had the unheard of audacity to go afloat together in the face of his frown.
Something is wrong somewhere, but what something, what may come of it, to whom, when, and from which unthought of and unheard of quarter is the puzzle of his life.
It's nothing more than a health and safety issue and was unheard of when I was a child living up north during the long hard cruel winters, with snow blowing in from Siberia and drifts of about six feet.
To do so for a whole three or four days is pretty much unheard of.