Very well, exceedingly well, as in You know full well how much this costs. [c. 1700]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
How to use full well in a sentence
He insisted that he had not intended the novel to be political allegory, while knowing full well that it would be taken as such.American Dreams: How Bush Shaped Our Reading of Roth’s ‘The Plot Against America’ | Nathaniel Rich | November 23, 2014 | THE DAILY BEAST
Or would you want as many options as possible, even knowing full well most will fail?The Upside of Ebola (Yes, There May Actually Be One) | Nick Gillespie | October 13, 2014 | THE DAILY BEAST
He told me to enter while smirking, knowing full well my intentions.Cocaine, Politicians and Wives: Inside the World’s Most Bizarre Prison | Jason Batansky | October 12, 2014 | THE DAILY BEAST
Typically, celebrities have stayed out of the Middle East conflict, knowing full well the tsunami of emotions it carries.How Jon Stewart Made It Okay to Care About Palestinian Suffering | Dean Obeidallah | July 21, 2014 | THE DAILY BEAST
She knows full well that some rappers sit in relative safety while stoking the violence.
Whenever a man makes it his business to search for these nests, he knows the danger full well.Alila, Our Little Philippine Cousin | Mary Hazelton Wade
Napoleon knew full well his weakness, and the reproaches he hurled at him at Wagram were not altogether without ground.Napoleon's Marshals | R. P. Dunn-Pattison
"Call Fortunio," was all she said, but Marius understood full well the purpose for which she would have Fortunio called.St. Martin's Summer | Rafael Sabatini
An Irish landlord knows full well that, even up to the present day, his tenants "keep the bread, and make borbhan."
Lucy recognized the hand, and knew full well what the letter would certainly contain.The Pit Town Coronet, Volume III (of 3) | Charles James Wills