Crossword Genius

Suspect noticing nothing in disguise (9)

Ross

I believe the answer is:

incognito

'in disguise' is the definition.
(thesaurus)

'suspect noticing nothing' is the wordplay.
'suspect' indicates an anagram.
'nothing' becomes 'o' (looks like zero - 0).
'noticing' anagrammed gives 'incognit'.
'incognit'+'o'='INCOGNITO'

(Other definitions for incognito that I've seen before include "Covertly" , "In disguise" , "under another name" , "With true identity concealed" , "Under assumed identity" .)

I've seen this clue in The Telegraph.
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