Crossword Genius

Very dangerous in general if the end of it is wrong (4-11)

Ross

I believe the answer is:

life-threatening

'very dangerous' is the definition.

'in general if the end of it is wrong' is the wordplay.
'end of' says to take the final letters.
'is wrong' indicates an anagram.
The last letter of 'it' is 't'.
'in'+'general'+'if'+'the'+'t'='ingeneralifthet'
'ingeneralifthet' with letters rearranged gives 'LIFE-THREATENING'.

I've seen this clue in The Independent.
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