Meaning of “unravel” - Learner’s Dictionary

unravel

verb [ I, T ] uk us /ʌnˈrævəl/ (present participle mainly UK unravelling, past tense and past participle unravelled, present participle US unraveling, past tense and past participle unraveled)
BECOME CLEAR

If you unravel a difficult situation or story, or if it unravels, it becomes clear and easier to understand:

No one has yet unravelled the mystery of his death.
THREAD/STRING

to stop being twisted together, or to move pieces of string, etc so that they are not twisted together

(Definition of “unravel” from the Cambridge Learner’s Dictionary © Cambridge University Press)