Crossword Genius

Certain tune with ice-ball involved (11)

Ross

I believe the answer is:

ineluctable

'certain' is the definition.
(synonyms)

'tune with ice-ball involved' is the wordplay.
'with' is a charade indicator (letters next to each other).
'involved' is an anagram indicator (involved can mean confusing or complex).
'tune'+'ice'+'ball'='tuneiceball'
'tuneiceball' is an anagram of 'INELUCTABLE'.

(Another definition for ineluctable that I've seen is " impossible to avoid".)

I've seen this clue in The Times.
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