lacubrious 

Update: Evidently it is a made up word. From an interview with Variety -
“I have a friend who calls himself Dr.Lacubrious,” Mraz said. “He’s like, it means lazy, its another word for lackadaisical. We couldn’t find it anywhere, and one day he left a message on my machine, and he’s like, you won’t find it in the dictionary because I made it up. And I thought it was very appropriate, because it is based on a friend of mine who’s the king of one-liners, who’ll say anything to get what he wants. And he’s usually pretty smooth about it.”

Found this info on this person's Site.

www.newleavesinmarch.com/2003_03_01_archives.html

lacubrious by Chevy May 7, 2005

lacubrious 

easy to chill out or hang out with. jason mraz uses it in one of his songs.

"i can be lacubrious with you"

lacubrious by jess June 14, 2004

lacubrious 

la·cu·bri·ous
Pronunciation: la-'cü-brE-&s also -'cyü-
Function: adjective
Etymology: irregular derived with a positive twist from lackadaisical created in 1994

1 : Chill Out; especially : exaggeratedly or affectedly becoming less tense or reserved < " I can be lacubrious wit' you." – J. Mraz>
2 : Relaxed <a lacubrious feeling>
Idioms be at ease, breathe easily, feel at home, make oneself at home
- la·cu·bri·ous·ly adverb
- la·cu·bri·ous·ness noun
- Dr. La·cu·bri·ous title

lacubrious by Anonymous September 19, 2004

lugubriousness 

Being in a depressed mess, that nobody wants to be around, or be in. Acting, mournful ,or gloomy, But in an exaggerating manner.

You can be a lugubrious person, like ROBERT.

Emily and I were going to attend Shelly's clambake, but ROBERT had to go and ruin everything by being his same old lugubrious self. He was in a pitiful state of lugubriousness, that put me in a very depressing mode. DAMN YOU ROBERT!

lugubriousness by Deseriee November 21, 2007

Lugubrious 

To be very intoxicated from the use of excessive alcohol consumption.

Duuudde! WE’RE GETTING FUCKING LUGUBRIOUS TONIGHT!

Lugubrious by Rosa Luther Mandela X the 2nd November 15, 2019

lugubrious 

Mournful or gloomy, especially to an exaggerated or ludicrous degree.

A shovel, tombstone, and other lugubrious items were in the cemetary.

lugubrious by b3ryan October 26, 2003

lucubrious

to be calm, cool, flowing. relaxed in an upbeat atmosphere

My boyfriend was lucubrious with me, even though the club was bouncing.

lucubrious by Jacks July 30, 2003