"be on the qui vive" in German to be on the qui vive auf der Hut sein wachsam sein Detailed translations for "be on the qui vive" to be on the qui vive to be on the qui vive(also: to be on alert, to be on one's guard, to look out for squalls, to be alert for trouble) auf der Hut sein to be on the qui vive(also: to be on alert, to be alert for trouble, to be alert, to put on guard) wachsam sein