The newly added words, phrases and abbreviations reflect the growing influence of texting and cyberspeak on the English language, with many entries that come from the Internet. And a large number of the new entries have their roots in American, British and Australian slang.
TL;DR: An influential dictionary added a bunch of crazy new words. Here are 15 of them, along with their official definitions:

air punch (noun): an act of thrusting one's clenched fist into the air, typically as a gesture of elation or triumph
budgie smugglers (noun): men’s brief, tight-fitting swimming trunks
butt ugly (adjective): extremely unattractive
deffo (adverb): definitely, certainly
folktronica (noun): style of popular music incorporating elements of folk and electronic music
FWIW (abbreviation): for what it's worth
glamping (noun): a form of camping involving accommodation and facilities more luxurious than those associated with traditional camping
hockey mom (noun): a mother who devotes a great deal of time and effort to supporting her children’s participation in ice hockey.
ICYMI (abbreviation): in case you missed it (used in electronic communication to draw attention to something noteworthy)
ROFL (abbreviation): rolling on the floor laughing (used to convey great amusement)
Scooby Snack (noun): a snack, especially given as a reward or inducement; specifically a bite-sized treat or a large multilayered sandwich. Also: food eaten to satisfy a hunger induced by drinking,smoking, or drug use.
starter marriage (noun): a short-lived first marriage between young adults, viewed as a form of preparation for a subsequent, more lasting one with different partners
TBH (abbreviation): to be honest
TL;DR (abbreviation): used as a dismissive response to a lengthy online post, or to introduce a summary of a lengthy post. (It stands for "too long; didn't read.
"listicle," defined as "a piece of writing or other content presented wholly or partly in the form of a list."

Not all the newly added words are as quirky as the ones above. Some, like "Afrofuturism" and "Hitchcockian," have their roots in the arts; others, like "agender," reflect changing attitudes about gender and identity in society.


http://naijarebrander..com.ng/2016/07/the-oxford-english-dictionary-added-new.html

Nice.