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su·per·sleuth | \ ˌsü-pər-ˈslüth 
\
\ plural supersleuths
Definition of supersleuth
: a very successful sleuth or detective
a TV supersleuth The supersleuth … has investigated a murder dating back 30 years for a slick new documentary drama.— Mark Jefferies and Nicola Methven
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Time Traveler for supersleuth
The first known use of supersleuth was in 1917
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