Originally Posted By: BranShea in part
...'on the qui vive' or also in a personalized way: "If you go there be on your qui vive". When I talk to him I have to be on my qui vive.
When we step in ice we have to be on our qui vive, etc.


Originally Posted By: Faldage
I suppose, if they meant anything like each other.


Really?

"On the Q.T." is but a short step to "be careful".

(Considering translanguaging.)