unonce 

When you miss the space between u and nonce, it is a common misspelling for you nonce

stop doing that unonce

unonce by Johnathon February 24, 2021

Unone 

(Pronunciation - un-one)
To undo something by one

“Hey Amy, can you unone my sleeve buttons please?”

Unone by BOATS-IN-COKE November 29, 2018

Uponce

It's the stunning combination of upon and once.

I'll e-mail Heather D, in the morning once I wake up. Which is pending uponce I fall asleep.

Uponce by Brat Benatar February 5, 2009

unconcentratory 

The state of being unable to focus.

Sorry, I wasn't listening. I'm so unconcentratory today.

unconcentratory by Pyraticen October 17, 2008

unconcentrate 

The ability to not be able to concentrate

I was so unconcentrated during the test there was to much chaos going on.

unconcentrate by imach September 27, 2013

Unone 

persona non-persona

Unone up a tree in Rosemount (persona non-persona missing but not missed)

Unone by Dies Fuastus August 11, 2018

unconceited 

the opposite of conceited

Mason is unconceited.

unconceited by Larry Bob McLarrypants September 15, 2010