Acute accent (5)

I believe the answer is:

grave

I believe this is a double definition.

'acute' is the first definition.
(thesaurus)

'accent' is the second definition.
(I know that grave is a type of accent)

(Other definitions for grave that I've seen before include "Grim-faced" , "Serious in cemetery?" , "Last resting place" , "Burial place is serious" , "In which to lay a corpse" .)

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

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