20 words you won't believe were actually added to the dictionary

The Oxford English Dictionary adds new words on a regular basis to reflect new cultural phenomena.

Some of these words may have seemed silly at first but slowly worked their way into everyday conversation. Some of them are just silly, period.

Here are 20 surprising words that somehow made it into the dictionary.

"Bro hug"

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Otto Greule Jr./Getty Images

Definition:a friendly embrace between two men.

"YOLO"

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Wikimedia Commons

Definition:"You only live once;" used to express the view that one should make the most of the present moment without worrying about the future (often as a rationale for impulsive or reckless behavior).

"Adorbs"

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Photo by Wang He/Getty Images

Definition: arousing great delight; cute or adorable.

"Selfie"

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Peter Macdiarmid / Getty

Definition: aphotograph that one has taken of oneself, typically one taken with a smartphone or webcam and shared via social media.

"Fuhgeddaboudit"

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HBO

Definition: forget about it (used to indicate that a scenario is unlikely or undesirable).

"Yas"

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Ronald Martinez/Getty Images

Definition: expressing great pleasure or excitement.

"Vom"

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Flickr/Jade Jackson

Definition: vomit.

"Gaydar"

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Dimitrios Kambouris/Getty Images

Definition: the supposed ability of homosexuals to recognize one another by means of very slight indications.

"Phablet"

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Rawpixel.com/Shutterstock

Definition: asmartphone having a screen which is intermediate in size between that of a typical smartphone and a tablet computer.

"Glam-ma"

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Evan Agostini/Getty Images

Definition: aglamorous grandmother, especially one who is relatively young or fashion-conscious.

"Worstest"

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Shutterstock

Definition: worst in emphatic use.

"Dance-off"

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BOOGIE STORM OFFICIAL/YouTube

Definition: acompetition, or a round in a competition, in which a number of dancers compete against each other until a winner is declared.

"Emoji"

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Emojipedia

Definition: asmall digital image or icon used to express an idea, emotion, etc.

"Bestie"

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White House/Pete Souza

Definition: a person's best friend.

"Bookaholic"

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Thomas Lohnes/Getty Images

Definition: ahabitual and prolific reader; a compulsive book buyer.

"Twerk"

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Chris Pizzello/Invision/AP

Definition: dance to popular music in a sexually provocative manner involving thrusting hip movements and a low, squatting stance.

"Vlog"

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YouTube/Tyler Oakley

Definition: apersonal website or social media account where a person regularly posts short videos.

"Glamping"

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Definition: aform of camping involving accommodation and facilities more luxurious than those associated with traditional camping.

"Hangry"

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Daniela Snow/Flickr

Definition: bad-tempered or irritable as a result of hunger.

"Binge-watch"

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Shutterstock

Definition: to watch multiple episodes of (a television program) in rapid succession, typically by means of DVDs or digital streaming.