To mix thoroughly; to confound; to disorder.
to puzzle, perplex, baffle, bewilder (somebody); to afflict by being complicated, contradictory, or otherwise difficult to understand
To mix up, muddle up (one thing with another); to mistake (one thing for another).
To be confused.
To cause disorder in (something); to distort from its ideal state.
To cause to malfunction or become inoperative.
To cause (someone) to go insane or become deranged.