disappointee 

(Noun) An politically-appointed individual who fails to meet expectations of the Administration

I am sure John had high hopes when he accepted the position as Chief of Staff but he is actually a disappointee.

disappointee by Cdg0606 September 21, 2021

Disappointment 

Running into a wall with a boner and breaking your nose first.

Austin breaking his nose sure was a disappointment

Disappointment by FALLEN MC February 3, 2009

Disappointment island 

An island where high schoolers go after finals exams are over

After finals me and my entire high school went to disappointment island

Disappointment island by Kidswillbekids May 17, 2019

Disappointment 

The emotion that you feel when your Urban Dictionary definition gets rejected.

My definition got rejected. I feel mass disappointment.

Disappointment by Michael Randy “crust” Jackson March 26, 2020

Disappointment 

What my mother calls me when I get a B on my geometry test before she makes me sleep outside

Mom: Robert! Get in here! You got a B? What a disappointment to this family. Go outside and sleep in the cold.

*I proceed to grab my teddy bear and Bible and go outside to appease my crazed mother*

*I also slap myself repeatively while self-scolding myself for my sins against my mother*

Disappointment by xX_Chromosones_Xx December 3, 2018

Disappointment 

My grades

My grades and marks are a disappointment

Disappointment by Youknowyaboigothisfreetaco October 30, 2019

Disappointment 

Spending eight hours editing a YouTube video only to have it get 26 views.

"I feel so much disappointment. Big, big oof."

Disappointment by Ry703 May 13, 2019