Decreptitude 

Cath made it up in a childcare lesson, it means the same as decrepit, except its used by her and her alone.

the process of becoming decrepit.

"It's years of work and decreptitude..."

Decreptitude by Chris February 1, 2005

Accelerated Decrepitude 

A process of abnormally rapid physical, mental and emotional decline associated with severe, unusually unstable environmental conditions.

Whazza matter with that dude? Isn't he a scientist? He looks like he's lost the will to live...
Oh, he's got Accelerated Decrepitude just like almost every other sane intelligent person around here; hopefully he'll recover after the Mueller Report is issued...

Accelerated Decrepitude by YAWA February 24, 2019

Derptitude 

The overwhelming propensity for being a complete and total derp.

Hey, have you seen Zombie's latest post? His level of derptitude is off the fuckin' charts!

Zombie's complete and utter fail at life is directly proportional to his derptitude.

Derptitude by Bigstugots October 27, 2010

decrepitude 

\de CREP' e tud\ noun:
of, or pertaining to, the massive infrastructure failure of the body due to advancing age

As I approach my fiftieth birthday, it becomes harder to fend off decrepitude.

decrepitude by Patlas January 8, 2009

penile decrepitude 

Very similar to senile decrepitude only its not your brain that is soft.
Similar to whiskey dick.
A serious softening of the penis.
Impotence.

Hey man what is wrong with me?!?!?! Not even that wild ass HOT red head could get me hard last night. I must be getting old or something...

No man it was all that tequila you drank.
Yea but she was SO HOT... and she sat on my face for a half hour and nothing...
Wow dude you must have penile decrepitude setting in.

penile decrepitude by word jockey September 8, 2013

Decrapitude 

n. int. Portmanteau of "decrepit" and "crap." Used to indicate a general state of malaise experienced by the direct object of the phrase as used. us. associated with aging.

"Feeling in a general state of decrapitude from Covid and being 32, Katie slept for much of the week."

Decrapitude by k80theshade November 2, 2021