"Incompleto" is a common word in Spanish used both in spoken and written contexts. It is frequently used to describe something that is not complete or finished. It can be used in general conversations, in professional settings, and in various fields like economics, law, and medicine.
Example sentences:
Este rompecabezas está incompleto. (This puzzle is incomplete.)
Su explicación es insuficiente e incompleta. (His explanation is insufficient and incomplete.)