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Following trouble, Peter's bound to succeed (4-4)

Ross

I believe the answer is:

fail-safe

'bound to succeed' is the definition.
(fail-safe means guaranteed to work)

'following trouble peter's' is the wordplay.
'following' becomes 'f' (used when citing page numbers etc).
'trouble' becomes 'ail' (synonyms).
'peter' becomes 'safe' (slang term).
'f'+'ail'+'safe'='FAIL-SAFE'

(Other definitions for fail-safe that I've seen before include "Designed never to stop working" , "Designed to prevent accidents in the case of malfunction" , "It ensures a return to a safety when something goes wrong with a mechanism" , "Unlikely to go wrong" , "Device to ensure proper operation" .)

I've seen this clue in The Times.
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