a. 1. That stands out; undischarged; uncollected; not paid; as, outstanding obligations. [ 1913 Webster ]
Revenues . . . as well outstanding as collected. A. Hamilton. [ 1913 Webster ]
2. Conspicuously excellent; markedly superior; distinguished. [ PJC ]
3. So prominent so as to attract notice; conspicuous; usually but not always in a good sense. [ PJC ]