WordWeb Online

1. Release from entanglement of difficulty
   "I cannot untangle myself from this task";
   - extricate, disentangle, disencumber
    
2. Become or cause to become undone by separating the fibers or threads of
   "untangle the thread";
   - unravel, unknot, unscramble, unpick

Derived forms: untangled, untangles, untangling

Type of: disengage, free, undo

Antonym: tangle