unravel
v//(ˌ)ʌnˈɹævl̩//reda ut, fransa, rämna
Of threads: to become separated from something knitted or woven, such as clothing or fabric; also, of something knitted or woven: to separate into threads; to come apart.
(figurative) Of a thing: to have its connected or united parts separated; to be thrown into disorder; to become confused or undone; to collapse.