funnerist 

The funnest day ever .

In a group of friends tear off the stick light it, drop it and wait. That's the funnerist way to light off a bottle rocket.

funnerist by samiamantha September 5, 2017

funnierestnever 

1. The not funnest time ever.
2. Really bad time having fun.

We had a funnierestnever time.

funnierestnever by NoFear14 January 15, 2021

fuckarist/fuckerist 

(noun) Any person(s) who practices and/or studies the arts of Fuckery.

A lifelong learner of all the deceits and various wickedness that come from fuckery, Betsy was truly a fuckarist/fuckerist to the core.

fuckarist/fuckerist by Nikki Stixx May 7, 2021

Funnerest

The most fun item from several competing levels of fun.

That ride was the funnerest in the whole park!

Funnerest by ReaperB December 19, 2011

Finneyistic 

Misspeaking one or multiple words in a sentence, or misrepresenting the sentence by forgoing the intended pacing of the sentence.

That's quite the finneyistic sentence, you want to try that again?

Finneyistic by m o n k h a u s September 2, 2018

Funderstorm 

When you are having so much fun it is out of control.

A brooding thunderstorm of fun.

The party was a funderstorm.
We had a few drinks and before we knew it, a funderstorm was brewing.

Funderstorm by Julian Conaghan October 22, 2010

funnerific 

An adjective; Fun and terrific

Kissing Jenny is funnerific

funnerific by Josh Dean September 22, 2007