Noun

(en noun)

Someone who takes advantage of any opportunity to advance his own situation, placing expediency above principle.

* {{quote-news

, year=2011 , date=November 12 , author= , title=International friendly: England 1-0 Spain , work=BBC Sport citation , page= , passage=James Milner's angled free-kick was headed on to the post by the tireless Bent and Lampard the opportunist was perfectly placed to stoop and head in from virtually on the goal-line.}}

Noun

(en noun)

One of the choices which can be made.

* {{quote-news

, year=2011 , date=October 23 , author=Becky Ashton , title=QPR 1 - 0 Chelsea , work=BBC Sport citation , page= , passage=Luiz struggled with the movement of Helguson in the box, as he collected a long ball and the Spaniard barged him over, leaving referee Chris Foy little option but to point to the spot.}}

* {{quote-magazine, date=2012-01

, author=Steven Sloman , title=The Battle Between Intuition and Deliberation , volume=100, issue=1, page=74 , magazine= citation , passage=Libertarian paternalism is the view that, because the way options' are presented to citizens affects what they choose, society should present ' options in a way that “nudges” our intuitive selves to make choices that are more consistent with what our more deliberative selves would have chosen if they were in control.}}

The freedom or right to choose.

(finance)(legal) A contract giving the holder the right to buy or sell an asset at a set strike price; can apply to financial market transactions, or to ordinary transactions for tangible assets such as a residence or automobile.

(graphical user interface) A button on a screen used to select an action (often "menu option")