Crossword Genius

Supporting coniferous tree in getting unforseen result (10)

Ross

I believe the answer is:

backfiring

I'm a little stuck... Click here to teach me more about this clue!

'unforseen result' is the definition.
I can't judge whether this defines the answer.

'supporting coniferous tree in' is the wordplay.
'supporting' becomes 'backing' (backing is a kind of supporting).
'coniferous tree' becomes 'fir' (fir is a kind of coniferous tree).
'in' means one lot of letters goes inside another.
'backing' enclosing 'fir' is 'BACKFIRING'.

'getting' is the link.

Can you help me to learn more?

(Other definitions for backfiring that I've seen before include "proving a disastrous failure" , "producing an own goal" .)

I've seen this clue in the Sydney Morning Herald.
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