Crossword Genius

Stale so not broadcast (7)

Ross

I believe the answer is:

unaired

'stale' is the definition.
(as in stale air)

'not broadcast' is the wordplay.
'not' becomes 'un' (prefix meaning 'not').
'broadcast' becomes 'aired' (synonyms).
'un'+'aired'='UNAIRED'

'so' is the link.

(Other definitions for unaired that I've seen before include "Not broadcast" , "Stuffy" .)

I've seen this clue in The Guardian.
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