Crossword Genius

Essential (5)

Ross

'essential' is the definition.
(thesaurus)

This is all the clue.

(Other definitions for first that I've seen before include "Initial" , "Preceding all others" , "Coming before all others" , "Premier (except in football!)" , "in dominant position" .)

I've seen this clue in The Independent, the King Feature Syndicate, the Penny Press, the Sydney Morning Herald, The Mirror, The Guardian, The Telegraph, the Evening Standard, The Irish Independent, The Times and The Sun.
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