The untying is easy.    From Wordnet, Princeton University. 

"A fellow without a knife might spend quite a while in untying all those," said the Hermit.    From Wordnik.com.  [A Little Bush Maid] Reference

She undid the knot with the feeling of pride which attends the operation of succeeding in untying.    From Wordnik.com.  [Hagar's Daughter: A Story of Southern Caste Prejudice] Reference

69 The counteracting effect involved defeating or "untying" the source of affliction.    From Wordnik.com.  [Societies, Religion, and History: Central East Tanzanians and the World They Created, c. 200 BCE to 1800 CE] Reference

We must be working from our own history - and we don’t need to call for "untying" the United States to become independent.    From Wordnik.com.  [VERMONT FIRST: Envisioning a new paradigm for Vermont secessionists.] Reference

Senator Sanders pulls his amendment, untying the Senate.    From Wordnik.com.  [CNN Transcript Dec 16, 2009] Reference

When he laughs, which is often, it's like a knot untying.    From Wordnik.com.  [Confessions Of An Outrageous Mind] Reference

He limped to the needleboat's moorings and began untying.    From Wordnik.com.  [The Year's Best Science Fiction 23rd Annual Collection]

He went out to the post and began untying the captive boy.    From Wordnik.com.  [Young Wild West at "Forbidden Pass" and, How Arietta Paid the Toll] Reference

Oscar-winning actress Renee Zellweger is untying the knot.    From Wordnik.com.  [CNN Transcript Sep 16, 2005] Reference

Oscar-winning actress Renee Zellwegger is untying the knot.    From Wordnik.com.  [CNN Transcript Sep 16, 2005] Reference

She had failed, having only succeeded in untying one of the knots.    From Wordnik.com.  [Folk-Lore and Legends: North American Indian] Reference

Then, untying a parcel and flushing as if she were embarrassed, Miss.    From Wordnik.com.  [The Girl Scouts in Beechwood Forest] Reference

Mandy was on her knees before the hamper, untying the rosy packages.    From Wordnik.com.  [The Trumpeter Swan] Reference

All this was found out without so much as breaking a seal or untying a string.    From Wordnik.com.  [The Great Round World and What Is Going On In It, Vol. 1, No. 40, August 12, 1897 A Weekly Magazine for Boys and Girls] Reference

During his short absence my mother's curiosity led her into untying the bundle.    From Wordnik.com.  [The Yotsuya Kwaidan or O'Iwa Inari Tales of the Tokugawa, Volume 1 (of 2)] Reference

"There's plenty of time," he said, leisurely untying a knot in a piece of string.    From Wordnik.com.  [A Sailor's Lass] Reference

He spends his days and Saturday nights in tying and untying books with broken covers.    From Wordnik.com.  [The Bibliotaph and Other People] Reference

'Let me in, Mary,' said Sarah, coming forward and untying her disguising handkerchief.    From Wordnik.com.  [Sarah's School Friend] Reference

It would be cutting the knot, instead of attempting the impossible task of untying it.    From Wordnik.com.  [The Lady of the Ice A Novel] Reference

Mr. Forester meanwhile was untying the string which fastened down the lid of the hamper.    From Wordnik.com.  [Hunter's Marjory A Story for Girls] Reference

A racist (ph) doesn't help untying McCain to the Keating 5 as well, does not help either.    From Wordnik.com.  [CNN Transcript Oct 12, 2008] Reference

Jim was untying his shoes and explained that, unable to sleep, he had gone out for a walk.    From Wordnik.com.  [32 Caliber] Reference

"You've eased her down, I hope, lad," said the old man, untying the bag and drawing forth the violin.    From Wordnik.com.  [Aunt Rachel] Reference

Finally Larive brought them to me, and untying the package with trembling hand, spread them before me.    From Wordnik.com.  [The French Immortals Series — Complete] Reference

All the women save the youngest went in turn, and each one succeeded in untying only one knot each time.    From Wordnik.com.  [Folk-Lore and Legends: North American Indian] Reference

He was untying Nobbles 'bandages, and when he came in two, he inspected both pieces with great solemnity.    From Wordnik.com.  ['Me and Nobbles'] Reference

The doctor was talking to Father Honoré while untying the horse from the hitching-post at the kitchen porch.    From Wordnik.com.  [Flamsted quarries] Reference

Ruth was so touched by this thoughtfulness on her sister's part, that she was a long time in untying the cord.    From Wordnik.com.  ['Our Guy' or, The elder brother] Reference

Her fingers were busy untying the piece of red mohair tape with which her heavy braid was fastened in a neat loop.    From Wordnik.com.  [Flamsted quarries] Reference

The girls sat on the step, untying their laces, when a man and a woman wearing jackets with the letter Q walked by.    From Wordnik.com.  [Arcana Magi - c.13: Along the Way] Reference

"I call that a pretty good way to put in time on Sunday," said one man to another as they were untying their teams.    From Wordnik.com.  [The Widow O'Callaghan's Boys] Reference

Clement enjoyed ownership in the same agreeable manner as his predecessors, "without the untying of purse-strings.".    From Wordnik.com.  [Cathedrals and Cloisters of the South of France, Volume 1] Reference

He had spent the last few years of his life unwinding things that had been wound and untying knots that had been tied.    From Wordnik.com.  [Man, Ending] Reference

He could picture himself whistling once, untying the boat he was assigned to, and jumping onboard at the last possible second.    From Wordnik.com.  [Corpus of a Siam Mosquito] Reference

Our progress has been the untying of their old cords of mental oppression, and the undoing of many things which they had set up.    From Wordnik.com.  [The Continental Monthly, Vol. 6, No 4, August, 1864 Devoted To Literature And National Policy] Reference

"Yes," said Isidore, untying and showing it to him; "and I shall certainly keep it in recollection of my most extraordinary escape.".    From Wordnik.com.  [The King's Warrant A Story of Old and New France] Reference