Tenebrous

Tenebrous (ten-uh-bruhs) adj. - dark; gloomy

To be used in place of "dark," and "obscure."
   
I prefer not to study in the musty and tenebrous school library.
The meaning of your argument is tenebrous and your logic is feeble. 

Nonpareil

Nonpareil (non-puh-rel) adj. - having no parallel

To be used in place of "extraordinary," "amazing," etc. (as well as "par excellence" and "extraordinaire").
    
Last week's game was exciting, but today's was nonpareil.
She is a violinist nonpareil.

Cantankerous

Cantankerous (kan-tang-ker-uhs) adj. - off-putting; ill-tempered

To be used in place of "obnoxious" "disagreeable," etc.

I'd come if the place wasn't full of cantankerous old men.

Bowdlerize

Bowdlerize (bohd-luh-rahyz) v. - to censor, expurgate, clean up

To be used in place of "censor," "water down," etc.
  
Many of the parents objected to a bowdlerized version of Huck Finn on the basis that works should be read as they were written. 

Heeled

Heeled (heeld) adj. - having money

To be used in place of "wealthy," "rich," etc.
 
The mayor was joined by his well-heeled coterie. 

Trammel

Trammel (tram-uhl) n. - impediment; constraint

To be used as "trammels" and in place of "obstacle," "limitation," etc.
 
He dreamed of a day when Wall Street would be free from the trammels of financial regulation.

Lily-livered

Lily-livered (lil-ee-liv-erd) adj. - cowardly

To be used in place of "cowardly," "spineless," etc.
 
Because I'm a lily-livered, bleeding-heart, liberal, egghead communist. - West Wing