Crossword Genius

Help idiot start to improve posture (10)

Ross

I believe the answer is:

assistance

'help' is the definition.
('assistance' can be a synonym of 'help')

'idiot start to improve posture' is the wordplay.
'idiot' becomes 'ass' (I've seen this before).
'start to' suggests taking the first letters.
'posture' becomes 'stance' (stance is a kind of posture**).
The initial letter of 'improve' is 'i'.
'ass'+'i'+'stance'='ASSISTANCE'

(Other definitions for assistance that I've seen before include "Aid" , "Help" , "Support" .)

I've seen this clue in The Guardian.
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