frustra (without success; with reference to the disappointed person): nequidquam (without effect; with reference to the thing which has come to nothing): incassum (without accomplishing one’s end, mostly when the failure might have been anticipated; casse, used by Liv., 24, 26, and cassum, by Sen., Her., oet., 352, are not usual). (The words are found in this connection and order.) frustra ac nequidquam (Catullus, 75, 1); incassum frustraque. You take pains fruitlessly, operam perdis.