Crossword Genius

One toiling at unravelling lawsuit (10)

Ross

I believe the answer is:

litigation

'lawsuit' is the definition.
(thesaurus)

'one toiling at unravelling' is the wordplay.
'one' becomes 'i' (Roman numeral).
'unravelling' indicates anagramming the letters.
'i'+'toiling'+'at'='itoilingat'
'itoilingat' with letters rearranged gives 'LITIGATION'.

(Another definition for litigation that I've seen is " Lawsuit, legal action".)

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