Crossword Genius

A flat turned out to be lethal (5)

Ross

I believe the answer is:

fatal

'to be lethal' is the definition.
(similar in meaning)

'a flat turned' is the wordplay.
'turned' indicates anagramming the letters.
'a'+'flat'='aflat'
'aflat' anagrammed gives 'FATAL'.

'out' acts as a link.

(Other definitions for fatal that I've seen before include "Disastrous, maybe lethal" , "Resulting in disaster or death" , "Causing or leading up to death" , "Involving death" , "Calamitous" .)

I've seen this clue in The Mirror.
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