millenni-ill 

The short-lived, Monday-morning illness that overcomes millennials after a long, holiday weekend.

Lauren is feeling millenni-ill this morning. She claims she needed a little more sleep, and would try to come later when she feels better.

millenni-ill by JLaCarter November 26, 2018

Millennium baby 

A baby born in the year 2000

"Amanda Is a millennium baby because she was born in 2000"

Millennium baby by JosephineRamirez July 6, 2016

Millenial Classic Rock 

A sub-genre of alternative and punk rock music typically ranging from the mid-to-early 90's to the mid-to-early 00's. This actual tasteful music is generally nostalgic to the Millenial generation as would a Baby Boomer or a Generation X person is to real Classic Rock. Music that typically belongs to this genre would be songs by Green Day, Blink-182, Linkin Park, Seether, Foo Fighters, Breaking Benjamin, and Three Days Grace.

At a party...
Man 1: Someone put some good music on!
Man 2: I'll put my iPhone on and play some MCR.
Man 1: MCR?
Man 2: Millenial Classic Rock. plays a song by Smash Mouth.
Woman: Hey! What's this crap? I haven't heard this song since I was in like, 2nd grade when I was a loser. It's not pump-me-up music ya know? Put some Kanye West on or Nicki Minaj.
Man 2: I hate this generation's music.

Millenial Classic Rock by block bros. April 5, 2017

#hashtag millennialing

When someone sees a Millennial doing something typically clueless or unthought out, narcissistically expecting others to acquiesce to what they are doing instead of trying to respect that there are other people pursuing their interests as well. For instance walking through an intersection against a traffic light while simultaneously holding a text conversation they are engrossed in. One could call it "#hashtag millennialing" This can include any oblivious actitivies. Yes it is a double hashtag... This is due to the millennial tendancy to hashtag everything WAY too much. Over hashtaging is another example for using "#hashtag millennialing"

Hailey just came down and told us to keep quiet because she has to work in the morning. It's 930pm... That bitch holds a regular Thursday night house party upstairs that goes till 330am... She's #hashtag millennialing.

Ethan put like 57 hashtags on this Instagram post of his breakfast... What does his half eaten omelette have to do with #Manbuns? Seriously... #hashtag millennialing!

#hashtag millennialing by Seafest42 April 8, 2017

4th millennium 

The 4th millennium will begin (or has begun) on January 1, 3001, and end (or has ended) on December 31, 4000. Predicted/Scheduled events include Global sea levels that would rise by between 2.1 and 6.8 metres (7 and 22 ft) due to manmade global warming, a camera at the ASU Art Museum which will have captured a 1,000-Year exposure that ends in 3015 for history's slowest photo, and it is also the time setting of the TV show Futurama which mainly takes place in the early years of the 31st century (3001–3012). In this series, the head of Richard M. Nixon wins the 3000 planetary election and becomes president of Earth. (Shoutout to future people and/or aliens reading this!)

I wonder if Urban Dictionary will be popular in the 4th millennium

Is the TV show Futurama set in the 4th millennium?

The 4th millennium is about 982 more years away from the year 2018

4th millennium by NicoRico February 6, 2018

Millenials 

A somewhat common misspelling of Millennials. Often used by crazed political pundits who don't have a clue and the elderly.

Pundit: "Millenials are so dumb it's scary!"
Millennial: "At least we can spell the word "Millennial" correctly."

Millenials by Spam4Dan November 10, 2018

Millenial 

A misspelling of Millennial, usually referring to the Millennial generation (early 1980s to mid-to-late 1990s).

Facebook commentator: "I sure hate all these entitled, lazy millenials! Back in my day..."
Millennial: "Two n's. Millennial has two n's, gramps."

Millenial by Spam4Dan November 10, 2018