A confounding variable.
To combine in a confused fashion; to mingle so as to make the parts indistinguishable.
To stun or amaze.
To make something worse.
To cause to be ashamed; to abash.
To defeat, to frustrate, to thwart.
To fail to see the difference; to mix up; to confuse right and wrong.
To perplex or puzzle.
Something made up of many confused or conflicting elements; a tangle.
A labyrinth; a puzzle consisting of a complicated network of paths or passages, the aim of which is to find one's way through.