Crossword Genius

Causing ruin (5)

Ross

I believe the answer is:

fatal

'causing ruin' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for fatal that I've seen before include "Disastrous, maybe lethal" , "Leading to disaster" , "making one late" , "Causing death, say accident" , "critical" .)

I've seen this clue in The Times, the New York Times and the Penny Press.
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