Your vocabulary is about to expand.

Merriam-Webster has added 2,000 words and phrases to its dictionary. A lot of them you may already know or use ("cold turkey," "revenge porn," "TMI"), while some may be totally foreign to you ("Mx.," "meet cute," nomophobia").

Here's a look at some of the words, along with their definitions. Whether they will remain part of the public vernacular remains to be seen, but for now they have definitely made their presence felt.

Bitcoin n : a digital currency created for use in peer-to-peer online transactions

cold case n : an unsolved criminal investigation (as of a homicide or abduction) that has stopped being actively pursued because of a lack of evidence

cold turkey n : abrupt complete cessation without medication of the use of drugs by a drug addict

compassion fatigue n : apathy or indifference toward the suffering of others as the result of overexposure to tragic news stories and images and the subsequent appeals for assistance

dipsogenic adj : producing thirst

dox transitive verb, slang : to publicly identify or publish private information about (someone) especially as a form of punishment or revenge

FOMO n, informal : fear of not being included in something (such as an interesting or enjoyable activity) that others are experiencing

hella adv, slang : very, extremely

ICYMI abbr : used to draw attention to something published or posted online earlier

meet-cute n : a cute, charming, or amusing first encounter between romantic partners (as in a movie)

Mx. n, chiefly British -- used as a gender-neutral title of courtesy

naff adj, British, informal : lacking in style or good taste : vulgar and unfashionable

nomophobia n : fear of being without access to a working cell phone

revenge porn n : sexually explicit images of a person posted online without that person’s consent especially as a form of revenge or harassment

TMI abbr : too much information

trigger warning n : a statement cautioning that content (as in a text, video, or class) may be disturbing or upsetting

wacky tobacky n, slang : marijuana