impervious 

im-pur-vee-uhs
not permitting penetration or passage; impenetrable, incapable of being injured or impaired:

The coat is impervious to rain, wear, and tear.

impervious by Dani W June 16, 2008

Impervious 

When applied to girls: the quality of being unaware of - or otherwise unaffected by - blatant perving.

Gavin: (staring at Karen's breasts) Wow you have beautiful eyes.
Karen: Aw, you're so sweet.
Onlooker: Karen is totally impervious.

Impervious by PearlFly January 28, 2013

imperius rex 

In Marvel Comics, Imperius rex is a yet undefined battle cry uttered by Atlantean King Namor the Submariner whenever he goes into battle.

"Imperius Rex"
-Namor when he charges into Battle

"Imperius Rex"
-Namor when he banned surfacers (us) from the ocean

"Imperius Rex"
-Namor when he and his Atlantean army assists Captain America during the Marvel Civil War

imperius rex by D_H @ Canada December 6, 2007

imbrevious 

(adj.) incapable of direct speech or succinctness as characterized by an inflated sense of intellect and or arrogant desire to hear the sound of one's own voice.

The keynote speaker was particularly imbrevious, and thusly, meeting attendees were delayed from lunch.

imbrevious by DelRayRunner June 19, 2010

Imperious Interruptus

The right of all bosses to hijack the conversations of subordinates. Said subordinates then must just awkwardly stand there while the boss talks to someone else with their back to you pretending you don't exist.

Dave: Then we can do the load testing and...
Boss: IMPERIOUS INTERRUPTUS!
*Dave stands there awkwardly*
Boss: Dave, stand there awkwardly while I talk to Pete as if you don't exist.

Imperious Interruptus by Pointy Haired Boss September 21, 2011

impertuviousness 

A state of being both haughty and obstinate. A word most often used by pseudo-intellectual people trying to come off as more literate than they actually are.

"I tire of your overt and egregious impertuviousness" said the professor, unaware that he himself was being impertuvious.

impertuviousness by antifederalism April 17, 2017

impediousity

When another party's procrastination and inability to make a decision affects your ability to complete a task.

John's impediousity prevented Jim from finishing the deck.

impediousity by Poutine10 July 1, 2008