Came to feeling less excited, less content (8)
I believe the answer is:
numbered
'came to' is the definition.
(come to can mean to amount to or number to)
'feeling less excited less content' is the wordplay.
'feeling less' becomes 'number' (more numb).
'excited' becomes 'e' (this might be a standard abbreviation which I don't know about).
'less' becomes 'under' (I've seen this in other clues).
'content' indicates the central letters.
The centre of 'under' is 'd'.
'number'+'e'+'d'='NUMBERED'
Can you help me to learn more?
(Other definitions for numbered that I've seen before include "Amounted to" , "was calculating" , "Designated" , "If one's days are ........, there's not long to live" , "Counted" .)