One’s free after review — as known beforehand (8)
I believe the answer is:
foreseen
'known beforehand' is the definition.
The definition and answer can be both related to thinking as well as being past participle verbs.
Maybe they are linked in a way I don't understand?
'one's free after review' is the wordplay.
'after review' indicates anagramming the letters (letters reviewed or revised).
'ones'+'free'='onesfree'
'onesfree' with letters rearranged gives 'FORESEEN'.
'as' acts as a link.
Can you help me to learn more?
(Other definitions for foreseen that I've seen before include "Expected" , "Predicted" , "Envisaged" , "No surprise" , "Anticipated" .)