Grumblebum 

An affectionate Australian term for a person who is always grumbling and complaining. Popularised by the classic 80's Aussie sitcom "Kingswood Country".

"Oh OK, fine, I'll stay and talk to Grumblebum!"

Grumblebum by OzSkypeGuy March 4, 2015

Grumblebrag 

To complain in a superficial manner, when one is really just boasting.

I have to wear my wedding ring or else I just get hit on too much. I'm not actually annoyed, I'm just grumblebragging.

Grumblebrag by das Luftkissenboot November 13, 2014

grumblump

A level name in the final world of Super Mario 3D World

Don't look up Grumblump on Urban Dictionary. - RedFalcon, 2021

grumblump by 5003erX March 5, 2021

Grumblefuck 

noun: an expletive for a person whom reluctantly completes a task
transitive verb: an expletive verb demonstrating irritation and reluctance

Don't be such a Grumblefuck, just do it.

I'm just going to have to grumblefuck my way through this.

Grumblefuck by julzipher May 8, 2010

Grumplebump

A grumplebump is a person who is acting grumpy out of character. They are regularly very good natured but are now acting grumpy without apparent reason.

:Hey did you talk to that nice girl Bonnie today?

:Yah I did but she was acting like a douche and being a total grumplebump.

Grumplebump by Chody Dootch October 12, 2011

GrumbleBunnies 

A term used when fustrated at a situation or person.

(You are at work and you are already in a bad mood when your boss hands you more work to be done ASAP)

"Oh grumblebunnies!"

GrumbleBunnies by LuxyLyx November 8, 2004

grumblepuckey 

an expression of defeat or frustration used especially when watching NFL Football on Sundays and being deep into the sauce.

GRUMBLEPUCKEY!!! the bills just beat the dolphins on the last play of the game to eliminate them from the playoffs!!!

grumblepuckey by jesjls August 6, 2007