Crossword Genius

Shock intelligence about new place

Ross

I believe the answer is:

nonplus

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'shock' is the definition.
(thesaurus)

I don't understand how the remainder of the clue works.

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(Other definitions for nonplus that I've seen before include "disadvantageous or neutral, presumably" , "Perplex, confound" , "Put at a loss; confuse" , "Disconcert, confound" , "State of confusion" .)

I've seen this clue in The Telegraph.
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