Crossword Genius

More safe crackers triggering alarm? (8)

Ross

I believe the answer is:

fearsome

'triggering alarm?' is the definition.
(creating fear or alarm)

'more safe crackers' is the wordplay.
'crackers' indicates anagramming the letters (informal term for mad).
'more'+'safe'='moresafe'
'moresafe' anagrammed gives 'FEARSOME'.

(Other definitions for fearsome that I've seen before include "Frightening, terrible" , "Of frightening appearance" , "Frightful" , "Fame rose and became frightening" , "Dreadful" .)

I've seen this clue in The Sun and The Times.
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