also: ディティクティブ · デテクティブ
noun
A straightforward loanword from English, used in Japanese to refer to a detective, often in the context of fiction, police work, or private investigation.
彼は小説の中でディテクティブとして活躍する。
He plays an active role as a detective in the novel.
あの映画の主人公は私立のディテクティブだ。
The protagonist of that movie is a private detective.
Borrowed from English 'detective'. The variant spellings reflect different attempts to transcribe the English pronunciation into katakana.