Crossword Genius

Strong back or chest (6)

Ross

I believe the answer is:

robust

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

'back or chest' is the wordplay.
'back' says the letters should be written backwards.
'chest' becomes 'bust' (bust can mean a woman's chest).
'or' back-to-front is 'ro'.
'ro'+'bust'='ROBUST'

(Other definitions for robust that I've seen before include "Athletic" , "Study and durable" , "Hardy and vigorous" , "Strong and healthy" , "Full and rich (wine)" .)

I've seen this clue in The Guardian.
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