An expression indicating zeal and perseverance.
1855. If you let us alone, we will do it a little more leisurely; but if you persecute us, we will sit up nights to preach the Gospel.Brigham Young, June 17: Journal of Discourses, ii. 320.
1910. Concerning Ballinger, the President is reported as absolutely determined to do nothing to force him from the Cabinet, yet, at the same time, as sitting up nights waiting for Mr. Ballinger to come round and hand in his resignation. We do not believe this is Mr. Tafts attitude, because it is a rather childish attitude for any man to assume.N.Y. Evening Post, Aug. 4.