The website is operated by Oxford University Press, the publisher of the Oxford English Dictionary. The Oxford English Corpus and the Oxford Reading Programme teams choose new words based on their perceived significance or importance and ability to stand the test of time.
The new entries include "YOLO," an acronym for "You Only Live Once" used as a rationale for impulsive or reckless behavior, "binge-watch," the act of watching multiple episodes of a television series in rapid succession, and "hot mess," a person or thing that is spectacularly unsuccessful or disordered. "Amazeballs," "bro hug," "douchebaggery," "live-tweet" and "side boob" are among the other entries.
OxfordDictionaries.com updates its entries four times a year. The website offers free help on use of the English language, including spelling, grammar and writing tips.