Crossword Genius

After setback, golfer suppressing old expletive - or part of one? (8)

Ross

I believe the answer is:

syllable

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'part of one?' is the definition.
'syllable' can be an answer for 'part' (syllable is a kind of part). I am unsure of the 'of one?' bit.

'after setback golfer suppressing old expletive' is the wordplay.
'after setback' is a reversal indicator.
'golfer' becomes 'els' (Ernie Els - former number one professional golfer).
'suppressing' indicates putting letters inside.
'old expletive' becomes 'bally' (I can't explain this - if you can you should give a lot more credence to this answer).
'els' placed around 'bally' is 'elballys'.
'elballys' in reverse letter order is 'SYLLABLE'.

'or' acts as a link.

Can you help me to learn more?

(Other definitions for syllable that I've seen before include "Single sounded unit of a word" , "A unit of spoken language" , "Division of word" , "Sounding part of a word" , "Unit of sound in word" .)

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