Biblical betrayer played by Hedy Lamarr in a 1949 film (7)

I believe the answer is:

delilah

(Other definitions for delilah that I've seen before include "See 8 across" , "Biblical betrayer" , "Dangerous temptress - Samson's girlfriend" , "Samson's destroyer" , "Samson's nemesis" .)

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

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