Crossword Genius

On the street I run activity (4)

Ross

I believe the answer is:

stir

'activity' is the definition.
(thesaurus)

'on the street i run' is the wordplay.
'on' says to put letters next to each other.
'the street' becomes 'st'.
'run' becomes 'r' (cricket abbreviation).
'st'+'i' is 'sti'.
'sti'+'r'='STIR'

(Other definitions for stir that I've seen before include "Arouse; mix" , "Excite emotionally" , "Mix or agitate" , "Excitement" , "Prison - mix" .)

I've seen this clue in The Telegraph.
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