at great length

at great length

For a long duration. When I came home after curfew, my mom interrogated me at great length. He spoke at great length about how he had been inspired by his trip.
See also: great, length

*at great length

for a long period of time. (*Typically: explain ~; question someone ~; speak ~.) The lawyer questioned the witness at great length.
See also: great, length
References in classic literature ?
One of the passengers being exceedingly anxious to expound at great length to my companion (not to me, of course) the true principles on which books of travel in America should be written by Englishmen, I feigned to fall asleep.
They did so, and the curate questioned the peasant at great length as to how he had found Don Quixote.
He spoke of the matter at great length, and I am sure he must have been right, for he had blue spectacles and a bald head, and whenever the young man made any remark, he always answered 'Pooh
An Inventory of papers, documents, and articles followed at great length on the next three pages.
When the customer was gone, Hepzibah talked rather vaguely, and at great length, about a certain Alice Pyncheon, who had been exceedingly beautiful and accomplished in her lifetime, a hundred years ago.
Moved by this entreaty, Newman stammered forth a variety of most unaccountable and entangled sentences, the upshot of which was, that Mrs Kenwigs had examined him, at great length that morning, touching the origin of his acquaintance with, and the whole life, adventures, and pedigree of, Nicholas; that Newman had parried these questions as long as he could, but being, at length, hard pressed and driven into a corner, had gone so far as to admit, that Nicholas was a tutor of great accomplishments, involved in some misfortunes which he was not at liberty to explain, and bearing the name of Johnson.
They had to chatter and explain the business at great length to each other, and my first attempts to make the exquisite little sounds of their language caused an immense amount of amusement.
Gliddon replied at great length, in phonetics; and but for the deficiency of American printing-offices in hieroglyphical type, it would afford me much pleasure to record here, in the original, the whole of his very excellent speech.
Here our whole party, joining voices, detailed, at great length, the assumptions of phrenology and the marvels of animal magnetism.
During the build-up to the 2003 attack on Iraq, the Bush administration spoke at great length about Saddam's supposedly massive arsenal of biological and chemical weapons without acknowledging that whatever capacity he had to manufacture such arms had been provided to him by the United States under president Reagan and the first President Bush (with Donald Rumsfeld, then a special presidential envoy to Baghdad, playing a pivotal role in a 1983 meeting with Saddam).
Peter Galbraith, like others before him, dwells at great length on these mistakes in his new book, The End of Iraq: How American Incompetence Created a War Without End.
Davis describes Uncle Len's athleticism at great length, hinting that such a strong man could not simply drop dead of a heart attack.
The demons of Mormando's title are the problems of witchcraft/sorcery, "sodomy," and Judaism/usury upon which Bernardino expounded in his sermons at great length and with mixed results on a number of occasions.
OFS President of Fiber, Cable and Connectivity and Chief Operating Officer Paul Neuhart commented, "We attempted at great length to discuss this matter with Alcatel amicably before filing suit, but unfortunately we were unable to make satisfactory progress in those discussions.
In any case, Hofstadter never was viewed as a full-fledged enemy by the Columbia student left; he returned to his office one day in April 1968 to find a note stating "The Forces of Liberation have, at great length, decided to spare your office (because you are not one of them).