Unbelievable 

The cast of Six UK Tour 2020-2021 (Lauren Drew, Maddison Bulleyment, Carly Dyer,Shekinah McFarlane, Jodie Steele, Athena Collins, Cassandra Lee, Jennifer Caldwell, Harriet Watson) who is going back on tour after 8 months

Millie "I can't wait to see UK Tour go back!"
Emma "I KNOW! They are UNBELIEVABLE!!!"

Unbelievable by catherine.parr.1512 October 21, 2020

Unreliable, untestable truth

The embodiment of faith.

Oh, you have faith do you?

The next time you feel compelled to use the word 'faith', why don't you try replacing it with: 'pretending to know something that I really don't know''.
If you really want to keep it simple you could just say: 'I have unreliable, untestable truth'.

Unreliable, untestable truth by YAWA October 31, 2017

Unbelievable Benoit 

To perform a totally random, unnecessary, and unexpected attack of violence on a friend or family member.

To Benoit something maybe used when somebody is extremely hungry, whereby to benoit a sandwich would mean to get it in a crossface and eat it..

Man, Maglade pulled an unbelievable benoit last night!

Man, I'd benoit the fuck outa that one hey!

Unbelievable Benoit by sublamagee May 19, 2009

Unreliable texter 

A person who texts unreliably; they can either respond in ten minutes or ten days. Also quality of texts are unpredictable. They are either short one words or paragraphs.

Oh yeah you know Courtney? She’s such an unreliable texter! She hasn’t responded in a week!

Unreliable texter by CTwister February 2, 2023

Unreliable 

Not able to be counted on; Not performing expected duties.

UrbanDictionary.com's definiton of pippie is very unreliable, as each one of the six definitons gives a different meaning for the word.

Unreliable by Rodney Basil April 10, 2004

Unbelievable Scenes 

when something very crazy or surprising happens, used in a happy context

Johnny brought his own beer to the party this time instead of stealing mine !, Unbelievable Scenes !

Look at that nerd tearing up the dancefloor ! Unbelievable Scenes !

Unbelievable Scenes by funnybloke April 15, 2012

ungelivable

Coined by the Chinese internet users recently to describe the feeling that something is not as good as expected and not giving you the "YES! THIS IS IT!" moment.

the stem of the adj. "geli" is what this word in Chinese sounds like. Geli literally means to use strength. Like a girl would say "fxxx me harder" during sex. I personally think that's one connotation in it.

A: This party is gonna be WILD.
B: I KNOW!

When they arrive and the party sucks.
A: This is so ungelivable.

ungelivable by whattheefffff November 12, 2010