Crossword Genius

Two that stir in a haphazard way, initially (2,5,4)

Ross

I believe the answer is:

to start with

'initially' is the definition.
(both can mean 'at first')

'two that stir in a haphazard way' is the wordplay.
'in a haphazard way' indicates anagramming the letters.
'two'+'that'+'stir'='twothatstir'
'twothatstir' is an anagram of 'TO START WITH'.

I've seen this clue in The Guardian.
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