Marked in French, ‘The beautiful first daughter’ (8)
I believe the answer is:
labelled
'marked in' is the definition.
The definition and answer can be both related to thinking as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for labelled that I've seen before include "Identified" , "Attached a tag to" , "Described" , "Marked with a tag" , "Assigned a category" .)