What is "on the qui vive"

Usage examples of "on the qui vive".

You will readily understand that all my faculties were now on the qui vive.

As I remember the New England boy (and I am very intimate with one), he used to be on the qui vive in the spring for the sap to begin running.

Even the guard, Bartlett, almost certainly because Kowalski's prowling figure was no longer there to keep him on the qui vive, was much nearer sleep than wakefulness, his head nodding on his chest, only occasionally, and with longer intervals in between, jerking his head upright.

The reporters in their little room outside were on the qui vive and I heard a whisper and a busy scratching of pencils as we passed in and the presence of someone else in the District Attorney's office was noted.

We were on the qui vive till daylight, and prepared for the combat.

The colonists were on the qui vive, and did not leave their post at the Chimneys.

Thus, without waiting to be marshaled, the soldiers will be constantly on the qui vive.

Joe kept me on the qui vive, walking up and down my body and nibbling my hair.

I think it would behoove us to be on the qui vive for any such developments.