Over tense (4)

I believe the answer is:

past

I believe this clue is a double definition.

'over' is the first definition.
(both can mean finished)

'tense' is the second definition.
(I know that past is a type of tense)

(Other definitions for past that I've seen before include "Days gone by" , "tense" , "A person's earlier life history" , "Beyond" , "Second visitor in 5 [A CHRISTMAS CAROL]" .)

I've seen this clue in The Mirror and The Telegraph.

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