Crossword Genius

Second arcade is not big (5)

Ross

I believe the answer is:

small

'is not big' is the definition.
('small' is the opposite to 'big')

'second arcade' is the wordplay.
'second' becomes 's' (common abbreviation).
'arcade' becomes 'mall'.
's'+'mall'='SMALL'

(Other definitions for small that I've seen before include "Young; modest" , "Of no great size" , "Limited in size or scope" , "Undersized" , "Not large" .)

I've seen this clue in The Mirror.
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