Crossword Genius

One uncommitted as the riot breaks out (9)

Ross

I believe the answer is:

hesitator

'one uncommitted' is the definition.

'as the riot breaks out' is the wordplay.
'breaks out' indicates an anagram.
'as'+'the'+'riot'='astheriot'
'astheriot' anagrammed gives 'HESITATOR'.

(Another definition for hesitator that I've seen is " I just can't decide".)

I've seen this clue in The Guardian.
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