Crossword Genius

One who insists on facts is later confused (7)

Ross

I believe the answer is:

realist

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'one who insists on facts' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

'is later confused' is the wordplay.
'confused' is an anagram indicator.
'is'+'later'='islater'
'islater' with letters rearranged gives 'REALIST'.

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(Other definitions for realist that I've seen before include "no Walter Mitty?" , "One's practically inclined" , "Sensible man" , "Pragmatic type" , "One without illusions" .)

I've seen this clue in The Globe and Mail.
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