detective
/dɪˈtɛktɪv/ adjective C2- Employed in detecting.
From the library
He was a young but trusted member of the detective force, who had distinguished himself in several cases which had been intrusted to him.
Once—well, I can hardly tell about the once to an official detective.
“Jonathan Wild wasn’t a detective, and he wasn’t in a novel.
“All knowledge comes useful to the detective,” remarked Holmes.
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