Crossword Genius

Audible greeting for spectator (7)

Ross

I believe the answer is:

watcher

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'spectator' is the definition.
(thesaurus)

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(Other definitions for watcher that I've seen before include "One who observes" , "I observe" , "Onlooker" , "Alert observer" , "Big Brother?" .)

I've seen this clue in The Telegraph.
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