Top Definition
marked by extreme genuineness or extremely free of dissimulation
Bitch, I will cut you, I'm so sinsur!
Damn, that new Atmosphere album is some quality music, so sinsur.
by L.R.M. April 18, 2008

Free Daily Email

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

Emails are sent from We'll never spam you.