scapegrace

\SKAYP-grayss\, noun:
A graceless, unprincipled person; one who is wild and reckless.

Rodriguo was a scapegrace all right. I once saw him pick up an entire salad bar and drain its contents into his mouth. Didn't even ask the manager if it was okay first.

Robert Mitchum: cultural icon or glorified scapegrace?

Yes, maybe I did "MOON THE PARLIMENT." Still, the word scapegrace seems a little harsh, no?

irrefragable

\ir-REF-ruh-guh-bul\, adjective:
Impossible to refute; incontestable; undeniable; as, an irrefragable argument; irrefragable evidence.

It is irrefragable that learning one new word a day will improve your sexual performance.

No matter how many times I try to refute the Good Lord Jesus... I'm tellin' ya, that guy is IRREFRAGABLE!

Okay, I'll agree with you that a tomato is a fruit, that part is irrefragable. But women deserving the right to abortion?! COME ON. I could refrag that in a second.

nugatory

\NOO-guh-tor-ee; NYOO-\, adjective:
1. Trifling; insignificant; inconsequential.
2. Having no force; inoperative; ineffectual.

This is a party! Pants are nugatory.
You and your nugatory education. Your nug-ucation.
Cover these nugatory facts with a blanket, so that they be "snugatory."

supernal

\soo-PUR-nul\, adjective:
Being in a higher place or region; locally higher; as, supernal regions.

O supernal powerline, how you mock me from the heavens!
Bob thinks he's so supernal ever since he won that People's Choice Award. Well guess what, Bob? Ya still got an asshole! Ya still got an asshole!

quiddity

\KWID-ih-tee\, noun:
The essence, nature, or distinctive peculiarity of a thing.

Y'all betta watch out, cuz bustin' asses iz my quiddity.
Face it Arnold, your only quiddity is stupidity!
Here's my Macguyver DVD collection, or as I like to call it, my quiddity.