Elope with Dr Batty and show regret (7)
I believe the answer is:
deplore
'show regret' is the definition.
'deplore' can be an answer for 'regret' (thesaurus). I am not sure about the 'show' bit.
'elope with dr batty' is the wordplay.
'with' says to put letters next to each other.
'batty' indicates anagramming the letters.
'elope' put after 'dr' is 'drelope'.
'drelope' with letters rearranged gives 'DEPLORE'.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for deplore that I've seen before include "Sorrow over" , "Regret deeply and strongly disapprove" , "Condemn" , "Express disgust at" , "Express strong disapproval of (something)" .)