Strongly or rashly intent (8)

I think it could be either:

Which length description are you looking for?:

4-4,2

hellbent

(Other definitions for hellbent that I've seen before include "Implacably set (on)" , "Obdurate" , "Recklessly resolute" , "Stubbornly determined, on the path to ruin?" , "madly determined" .)

I've seen this clue in The Mirror.

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