A determined attitude (3)

I believe the answer is:

set

This clue is a double definition.

'a determined' is the first definition.
(thesaurus)

'attitude' is the second definition.
(set is a kind of attitude)

(Other definitions for set that I've seen before include "declined" , "Hardened" , "Cake < , plonk < , something served" , "Solidify; group" , "(Of the sun) drop below the horizon" .)

I've seen this clue in the Evening Standard.

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