uncompleted

When time's up but you haven't answered all the questions on the math test, you'll have to leave it uncompleted, or not totally finished.

Uncompleted things can range from a small project that's halfway done — like your uncompleted diorama for history class — to something larger, like the uncompleted highway repair job that is snarling traffic for miles. In either case, something isn't completed, which means whole or finished, from the Latin root complere, "to fill up or to complete the number of."