Meaning

• To puzzle, perplex, baffle, bewilder (somebody).

• To mix up, muddle up (one thing with another); to mistake (one thing for another).

• To mix thoroughly; to confound; to disorder.

• To make uneasy and ashamed; to embarrass.

• To rout; discomfit.

• To be confused.

Meaning

• Difficult to understand; not clear as lacking order, chaotic etc

  "Several sections in that book are really confusing."