Adore to excess (4)
I believe the answer is:
dote
'adore to excess' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for dote that I've seen before include "Be infatuated" , "Show excessive affection" , "Be overly fond" , "Be weakly affectionate" , "Be overfond" .)