un·rav·el 
(ŭn-răvəl)
(ŭn-răvəl)v. un·rav·eled, un·rav·el·ing, un·rav·els or un·rav·elled or un·rav·el·ling
v.tr.
1.
a. To undo or ravel the entangled, knitted, or woven threads of: unraveled the sweater.
b. To undo or separate (entangled, knitted, or woven threads).
2. To clarify the elements of (something mysterious or baffling); solve: The detective unraveled the mystery.
3. To cause to fail or become ruined or unfulfilled: Their plans to open a restaurant became unraveled.
v.intr.
1. To become unraveled: The seam unraveled.
2. To fail or become ruined or unfulfilled: His life unraveled after the stock market crash.