Adjective

(en adjective)

Characterized by moral or cultural decline.

* - The Decline and Fall of the American Empire (1992)

As societies grow decadent, the language grows decadent, too. Words are used to disguise, not to illuminate, action: you liberate a city by destroying it. Words are to confuse, so that at election time people will solemnly vote against their own interests.

Luxuriously self-indulgent.

* "

Surgery in an opera? How wonderfully decadent ! And just as I was beginning to lose interest!

Adjective

(en adjective)

Exceeding the bounds of something; roving; hence, foreign.

* (William Shakespeare)

The extravagant and erring spirit hies / To his confine.

Extreme; wild; excessive; unrestrained.

* Addison

There appears something nobly wild and extravagant in great natural geniuses.

*{{quote-book, year=1963, author=(Margery Allingham)

, title=(The China Governess), chapter=1 citation , passage=The half-dozen pieces […] were painted white and carved with festoons of flowers, birds and cupids. […] The bed was the most extravagant piece. Its graceful cane halftester rose high towards the cornice and was so festooned in carved white wood that the effect was positively insecure, as if the great couch were trimmed with icing sugar.}}

Exorbitant.

*{{quote-magazine, date=2013-06-08, volume=407, issue=8839, page=55, magazine=(The Economist)

, title= Obama goes troll-hunting , passage=According to this saga of intellectual-property misanthropy, these creatures [patent trolls] roam the business world, buying up patents and then using them to demand extravagant payouts from companies they accuse of infringing them. Often, their victims pay up rather than face the costs of a legal battle.}}

Profuse in expenditure; prodigal; wasteful.

(Bancroft)