Word of the Times

Oxford's Word of the Year is hypermiling or to hypermile which is defined as "to attempt to maximize gas mileage by making fuel-conserving adjustments to one’s car and one’s driving techniques. Rather than aiming for good mileage or even great mileage, hypermilers seek to push their gas tanks to the limit and achieve hypermileage, exceeding EPA ratings for miles per gallon."
The finalists are:

frugalista – person who leads a frugal lifestyle, but stays fashionable and healthy by swapping clothes, buying second-hand, growing own produce, etc.

moofer – a mobile out of office worker – ie. someone who works away from a fixed workplace, via Blackberry/laptop/wi-fi etc. (also verbal noun, moofing)

topless meeting – a meeting in which the participants are barred from using their laptops, Blackberries, cellphones, etc.

toxic debt – mainly sub-prime debts that are now proving so disastrous to banks. They were parceled up and sent around the global financial system like toxic waste, hence the allusion.

Losing out are CarrotMob, ecohacking (also known as geoengineering), hockey mom , link bait, luchador, rewilding, staycation, tweet, and wardrobe as a verb.