unkiff 

South African surfer slang for not cool or something that you dont like

Dude, that beer is unkiff
The way you treat her is unkiff

unkiff by delly November 1, 2013

uniffifiable 

Unable to be made uncertain; impossible to be made iffy.

I love the certainty he has. Even when I'm iffy, he's uniffifiable.

uniffifiable by Uniffifiable Jen July 2, 2006

unbiffle 

Someone who was your best friend but now is not. To reject te use of the Biffle status by calling them someone who is not your best friend anymore. An unfriend.

Sally: Hey, you're my biffle right?
Jane: No, ever since you dated my ex Billy, you're my unbiffle.

Billy: Hey ladies!

unbiffle by Kandi Kane Khloe June 14, 2011

unifferent 

A word made up of unique and different. See also freak.

Flinders street train station is always full of unifferent people.

unifferent by ox99 March 28, 2020

undiffer 

To not me differ meaning not differ.
As in not different.

Friend: I beg to differ

Me: I beg to undiffer as you are wrong

undiffer by Dr_Pp January 9, 2024