A combination of sincere and serious. The realest of real.Handling yours and being unabatable or unstoppable. On top seeing nobody above you.
Kanye West's tracks and lyrics is so sincerious. Menh he aint playing bout making his paper he sincerious wit it. 10/20/05
by AnnonymousTipz October 21, 2005
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A combination of sincere and serious. For when you are seriously sincere.
Are serious dude?

No. I am sincerious.
by Fukt Up October 6, 2009
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Being sincere and serious at the same time.
Jimmy: Yeah, RIGHHHTT.

Tom: No, I'm being sincerious.
by nesbolin July 10, 2009
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1. The ability to speak freely, openly and honestly about anything; if you're going to say something, say it sinceriously.

2. To initiate any action while spreading as much good karma as possible.
When I say this I say it sinceriously.

I'm going to sinceriously raise as much money for charity as possible.
by Gingey87 January 17, 2015
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1. The ability to speak freely, openly and honestly; about anything: if you're going to say something, say it sinceriously.

2. To initiate any action while spreading as much good karma as possible.
1. The Green Arrow normaly kept to himself, but he spoke about his problems sinceriously.

2. N8 and Timmy spoke Sinceriously when rapping in their single "Back Streets" to their upcoming Initation EP.

3.
by Nathan N8 Mitchell January 31, 2015
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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
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