unravel
Concise Oxford English Dictionary © 2008 Oxford University Press:
unravel/ʌnˈravl/
▶verb (unravels, unravelling, unravelled; US unravels, unraveling, unraveled)
- 1 undo (twisted, knitted, or woven threads).
■ become undone.
- 2 investigate and solve (a mystery or puzzle).
- 3 begin to fail or collapse.
'unravel' also found in these Oxford entries:

