Crossword Genius

Promising book fair (6)

Ross

I believe the answer is:

bright

'promising' is the definition.
(I know that promising can be written as bright)

'book fair' is the wordplay.
'book' becomes 'b' (abbreviation for book).
'fair' becomes 'right'.
'b'+'right'='BRIGHT'

(Other definitions for bright that I've seen before include "Illuminated" , "Jolly" , "Vivid; cheerfully lively" , "Clever; vivid" , "Sparkling" .)

I've seen this clue in The Guardian.
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