Top Definition
A form of sincerity that holds nothing back. Completely and totally honest. Every aspect is real.
jack: That band has long island sincerity.
sally: Yeah, they remind me of Brand New.
by Leslieeee February 10, 2008
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×