Guestimating 

Best guess, using formulated approach to vaguely reference any particular set of information.

"From the location and smell of urine from the street, I’m guestimating this housewarming is more like a squat party at a crack house."

"I'm guestimating we'll be ready around 6 o'clock."

Guestimating by Wes Ferguson July 26, 2005

guestimation

A guestimation is an entirely useless term that resides between guess and estimation.
Know>estimate>guess>unknown

Dude 1: My guestimation is about $1,500 for that car.
Dude 2: ?

guestimation by Transpolar Drift Stream July 20, 2011

guestimation

Half way between a guess and and an estimation.

Guy1: You were right! Edouard really is an idiot!
Guy2: So, my guestimations were correct! I knew it from the very beginning!

guestimation by Raffik October 27, 2007

Gastimating 

When your odometer goes on your tank,and you guestimate your how full your tank is

Kyle: dude how much longer can we drive?
Kevin: Idk bro, Im gastimating it.
Kyle:dude...

Gastimating by chadbrochill34224 January 31, 2010

Guestimation

A guess and an estimation combined. A word created by a worker at Coke.

The vet gave a guestimation of the dogs age.

Guestimation by Guestimater January 10, 2020