Antonym and Synonym Word

Both sought to illustrate what the next four years would be like under their leadership as new polls indicated Obama exceeding 50% support among likely voters in Ohio, Florida and Pennsylvania. Those are all swing states that combined will account for nearly a quarter of the electoral votes needed to win the White House.

From the sort paragraph above..may I know what is the most suitable antonym and synonym for the word ILLUSTRATE.

Thank you.