Crossword Genius

Essential (5)

Ross

'essential' is the definition.
(similar in meaning)

This is the entire clue.

(Other definitions for basal that I've seen before include "At the lowest level" , "bottom layer perhaps" , "Fundamental" , "forming a foundation" .)

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