Dogs and mice and flies are as unrepeatable as men are.    From Wordnet, Princeton University. 

A live, largely uncensored affair, often improvised and by definition unrepeatable, the very opposite of recorded entertainment.    From Wordnik.com.  [Last Words] Reference

The bully protested in a torrent of unrepeatable words.    From Wordnik.com.  [The Lincoln Story Book] Reference

The opposite of "concrete" is unrepeatable or unpredictable.    From Wordnik.com.  [Archive 2005-10-01] Reference

Haplo intimated that he did with a few brief and unrepeatable words.    From Wordnik.com.  [Into the Labyrinth]

Thanks a lot, now I've got an unrepeatable old-man-from-Nantucket earworm.    From Wordnik.com.  [languagehat.com: IMMORTALIA.] Reference

Do the Obama optimists really think that New Hampshire is an unrepeatable fluke?.    From Wordnik.com.  [Rasmussen: Obama Catching Up In Texas And Ohio] Reference

After his next two shows fizzled, he believed his early success was unrepeatable.    From Wordnik.com.  [No stranger to a full house] Reference

Look into the Net to find about the immense richness of that unrepeatable series.    From Wordnik.com.  [Filmstalker: Nolan to remake The Prisoner] Reference

Cold fusion all over again and a case of one unrepeated and unrepeatable experiment.    From Wordnik.com.  [Some Thoughts on Disclosure and Due Diligence in Climate Science « Climate Audit] Reference

Mr. Scott's example of the classic and unrepeatable Space Oddessy 2001, struck a chord.    From Wordnik.com.  [Are Sci-Fi Films are as Dead as Westerns?] Reference

Each child is a unique and unrepeatable person and must receive individualized formation.    From Wordnik.com.  [Catholic teaching on Sex Education] Reference

They can take judicial notice of the weakness of unrepeatable, or non-peer reviewed matters.    From Wordnik.com.  [Ten Things (At Least!) Right About Kitzmiller - The Panda's Thumb] Reference

Each life its own, each life unique, unrepeatable, soon ended, a brief shining of the light.    From Wordnik.com.  [Drowned Hopes]

This was before it began to rain, following which I made unrepeatable oaths to buy said bike.    From Wordnik.com.  [I want to ride my - - -] Reference

Mr. Pike cursed him with fearful, unrepeatable words, and again demanded what he was doing there.    From Wordnik.com.  [CHAPTER XXXII] Reference

When you're in the audience, you want these kinds of moments to be unique, magic, and unrepeatable.    From Wordnik.com.  [Bono On Bono]

"Well, dang it -- I'm still not sure I see the point of this whole unrepeatable word drive," Dave groused.    From Wordnik.com.  [Alfred Hitchcock's Mystery Magazine]

On the other hand, the results were inconsistent and there is likelihood that they will prove unrepeatable.    From Wordnik.com.  [10 Next Steps] Reference

All this from a single poorly designed and I would bet unrepeatable experiment using medical research standards.    From Wordnik.com.  [Srinivasan Pillay: The Science of Distant Healing] Reference

The comfortable retirement Grandma and Grandpa Wheelock enjoyed looks more and more like an unrepeatable memory.    From Wordnik.com.  [Family Holiday Letter Encourages Fresh Thinking] Reference

High point: For the rock geeks, the unrepeatable sight of Lou Reed playing alongside Damon Albarn and half of the Clash.    From Wordnik.com.  [Gorillaz at Glastonbury 2010] Reference

These blog projects that become books and movies make me somewhat sad, because in the end they are unrepeatable experiments.    From Wordnik.com.  [Peter Straub's A Dark Matter] Reference

After which, when there was a group of them together, they would burst out laughing, and utter a flood of unrepeatable comments.    From Wordnik.com.  [Maigret's Memoirs]

For a brief and unrepeatable moment, an eyeblink in cultural history, the City of Angels contained the future of classical music.    From Wordnik.com.  [Genius In Exile] Reference

And he turned to me, and he began calling me these unprintable and certainly unrepeatable names tha -- that you have referred to.    From Wordnik.com.  [Staying Tuned: A Life in Journalism] Reference

Peeler mumbled something unrepeatable, and even the normally imperturbable Chaa had a few choice words to say in his own language.    From Wordnik.com.  [Mid Flinx]

"Shame on you," was the general message of hundreds of comments about the women's behavior, though most used unrepeatable vocabulary.    From Wordnik.com.  [Giggling Belgrade looters becomes YouTube smash hit] Reference

As historical temperature measurements are unrepeatable, the process of scientific validation by independent experiment is impossible.    From Wordnik.com.  [surfacestations.org « Climate Audit] Reference

Human failure is tragic and terrible because it means that some unique and unrepeatable aspect of God's purpose has been allowed to vanish.    From Wordnik.com.  [Christianity: Public Religion and the Common Good] Reference

Earnings per share can be stretched upward by stock buybacks, accounting changes, unrepeatable gains and a host of other ephemeral factors.    From Wordnik.com.  [CEOs Need to Bring Investors Along for the Ride] Reference