To make unnecessarily complex.
To confuse, mix up (something) with something else.
To fold or coil into numerous overlapping layers.
Convoluted.
Coiled such that one edge is inside, and one outside the coil, giving a spiral effect in cross section.
To become untwisted or disentangled.
To free (one thing that is entwined with another), disentangle, extricate.
To untwist the strands of (something entwined).