1. Something that completes, makes up a whole, or brings to perfection. 2. shelves with a full complement of books. 3. Either of two parts that complete the whole or mutually complete each other. 4. An angle related to another so that the sum of their measures is 90. 5. 6. An interval that completes an octave when added to a given interval. 7. The full crew of officers and enlisted personnel required to run a ship. 8. alexin 9. For a universal set, the set of all elements in the set that are not in a specified subset. 10. Roses in a silver bowl complement the handsome cherry table.