Sincerious

Having genuine sincerity (Comes from "serious" and "sincere") (Created by rapper Mos Def)

I told her I was sincerious in my apology.

by Curtis Meyer March 13, 2008

iLL SinCe BiRth

1.The act of being fresh to death,fly as a bird,kool as a fan, or any variation of the three.
2. Entertainment Group from Long Beach, CAlifornia "iLL Since Birth Ent." est. 2007 founded by KL33n KiNg aka DouBLe K.

homie 1. Mayuun ive been ill since birth they cant faze me..
homie 2. yeah dats true..u do stay kool as a fan...

by illsincebirth October 5, 2009

sinceriously

Sincere/Seriously
Being sincere and serious.

I need to get laid sinceriously.

by Francis Craven March 5, 2005

N*sinc With Guitars

1) A bad pop-rock band. Often given to corporate sellout bands.
2) Literal meaning; N*sync with guitars.
3) A un-needed blatant attack on pop-rock bands in general by some angsty teenager.

Dude, that band sounds like N*sync with guitars.

by Bakagamer September 13, 2005

Sinclaire

The nicest sweetest girl you will ever meet. She is also really pretty and athletic. Although she makes really stupid choices she works around it, she liked is liked by many and hated by more though. Mostly out of jealousy, she has away with guys too.

Guy: Did you see Sinclaire yesterday? She looked really hot!
Girl: God shut up!

Girl: Oh my god I hate Sinclaire so much, she is a whore.
Guy: Why because she has an ounce of personality and is actually nice to people?

by Supersede February 3, 2013

Sinch

1. a Word Meaning Simple or quick
2. a Kickass Alternative Band

1. "I'll do it, its a Sinch"
2. Sinch is Known for Something More, Plasma... and is a very unknown band for some reason

by PseudoKirby February 22, 2008

Sincerely

a way to finish a letter

thank you sincerely Madison

by Roslynnn February 14, 2015