Crossword Genius

Was he with gross cover-up? (9)

Ross

I believe the answer is:

whitewash

'cover-up?' is the definition.
(I've seen this in another clue)

'was he with gross' is the wordplay.
'gross' indicates an anagram.
'was'+'he'+'with'='washewith'
'washewith' is an anagram of 'WHITEWASH'.

(Other definitions for whitewash that I've seen before include "Cover up - wall coating" , "Substance applied to a wall - total defeat" , "Gloss over faults with wall colouring?" , "Solution for painting walls - clean sweep of victories" , "overwhelming defeat" .)

I've seen this clue in the Sydney Morning Herald.
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