On the Q.T.

Does anyone know exactly what the phrase "on the Q.T." means.

I have had always heard it to be synonymous with saying something off the record or meaning that something you have just said is to be kept secret.

Example: "I'm saying this to you strictly on the Q.T., but I think the Senator will be running for re-election next term."

Any ideas?

Thanks.

Yes, the meaning is just what you think--something just said is supposed to be secretive or "off the record".

Any idea where 'QT' comes from? Is is shorthand for 'Quiet'?