Definitions by chicadee6jen

JSYN

J = Just
S = So
Y = You
N = Know (noe)
JSYN = just so you know

JSYN, my name is not emily, it is alli

JSYN by chicadee6jen June 11, 2008

noun- a friend disguised as an enemy; an enemy pretending to be a friend

Caitlin keeps asking for my lunch money and says that friends share. She is using me. She is a frienemy.