The police officer finds himself unsure about who the murderer is.
I have written the sentence using the word unsure. Is it grammatically correct?
The phrasing ‘unsure of’ is much more common than ‘unsure about’; because ‘about’ is less precise than ‘of’. ” Neither ‘unsure of’ nor ‘unsure about’ applies. ”
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The phrasing ‘unsure of’ is much more common than ‘unsure about’; because ‘about’ is less precise than ‘of’. However, in this sentence, there is a particular question: “Who is the murderer?” Neither ‘unsure of’ nor ‘unsure about’ applies. Instead I would suggest, “The police officer finds himself unsure who the murderer is.”