Dark heart of husband is malicious (6)

I believe the answer is:

dismal

'dark' is the definition.
(thesaurus)

'heart of husband is malicious' is the wordplay.
'heart of' indicates a hidden word.
'DISMAL' can be found hidden inside 'husband is malicious'.

(Other definitions for dismal that I've seen before include "Very disappointing" , "Miserable" , "dark" , "Wretched" , "Dull and dreary" .)

I've seen this clue in The Telegraph.

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