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)

Adjective

(wikipedia undefined) (-)

Lacking a definition or value.

(mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.

The result of division by zero is undefined .