phrase meaning quiet tongue and often used with the word *on* and meaning being quiet when referring to secrets, gossip, or lies.
Since Tyrone showed up with the new purple 05 Cadillac with thin tires and spinner, silver wheels, he's been on the qt even with Brie Ann.
by Richard Black June 04, 2005
by 444free July 15, 2016
by ERY April 22, 2005
You gotta see this girl that sits in front of me in chemistry. She doesn't say much, but damn, she's a real QT.
by tommies r us January 10, 2008
a abriviation term used to say cute or super cute if a guy tells a girl in a note that she is a QT that means he is interested but you need totake precaution
by reJghsdfbsudibfsk July 11, 2008