serious 

Intense; hardcore.

"Things are gettin' serious up in here."

"I made some serious cash last night."

serious by **** you March 18, 2003

Serious 

Not comical.

The guy would make a joke every now and then, but was mostly serious by nature. He thought of comedy as something the less serious and more silly folks enjoyed a bit more.

Serious by Solid Mantis June 20, 2018

serious 

Grave in quality or manner, or being of such importance as to cause anxiety.

- like making sure that your space shuttle is safe to use to re-enter a your own planet's atmosphere... THAT is serious.

serious by Anonymous February 1, 2003

serious 

Slang word used in the north of london
meaning some thing good.

or

some one that does not find what they do important.

Them creps are serious cuzz.

or

"Your not serious"-JME of meridian crew

serious by Voltige K-I-D June 10, 2004

serious 

what all dads are when they come home from work

damn he's serious

serious by potatosfromearth123 May 15, 2017

serious 

looking nice....as in someone/something that would interest you.

Wow! Shorty is looking serious in those jeans.

serious by Adrianne March 24, 2004

serious 

1. something generally good or fun

2. something gangsta or crime related which is impressive

immortalised by garage emcee JME, "it's serious, serious". and so on.

1. "oi this new Mos Def song i got is serious"

2. ye i heard about that boy that pars around E8 but he's a pussy, he aint serious"

serious by Lord Sinista November 11, 2005