Crossword Genius

Go off to walk in river (7)

Ross

I believe the answer is:

explode

'go off' is the definition.
(exploding is a kind of going off)

'walk in river' is the wordplay.
'walk' becomes 'plod' (plodding is a kind of walking**).
'in' is an insertion indicator.
'river' becomes 'exe' (I've seen this before).
'plod' put inside 'exe' is 'EXPLODE'.

'to' is the link.

(Other definitions for explode that I've seen before include "Detonate" , "Blow up" , "Do expel (anag)" , "Pop" , "Violently shatter" .)

I've seen this clue in The Telegraph.
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