"ravelling" in the noun sense
1. raveling, ravelling
a bit of fiber that has become separated from woven fabric
"ravelling" in the verb sense
1. ravel, unravel, ravel out
disentangle
"can you unravel the mystery?"
2. ravel, tangle, knot
tangle or complicate
"a ravelled story"
Source: WordNet® (An amazing lexical database of English)
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