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English definition of “sleuth”

sleuth

noun [C] uk   /sluːθ/ old-fashioned or humorous us  
someone whose job is to discover information about crimes and find out who is responsible for them
Synonym
sleuthing
noun [U] uk   /ˈsluː.θɪŋ/ informal us  
A bit of sleuthing from our investigative reporter uncovered some interesting information on Mr Parkinson.
(Definition of sleuth from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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