Afterwards from the main exterior (4)

I believe the answer is:

'afterwards' is the definition.
(thesaurus)

'from the main exterior' is the wordplay.
'from' indicates the answer is hidden within the clue.
'NEXT' can be found hidden inside 'main exterior'.

(Other definitions for next that I've seen before include "Following in sequence" , "shop" , "First in line" , "The second cherry stone on the plate" , "Proximate" .)

I've seen this clue in The Mirror.

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