Condemn daughter and Romeo getting admission to elope at sea (7)
I believe the answer is:
deplore
'condemn' is the definition.
(I've seen this before)
'daughter and romeo getting admission to elope at sea' is the wordplay.
'daughter' becomes 'd'.
'and' means one lot of letters go next to another.
'romeo' becomes 'r' (phonetic alphabet: alpha, bravo, charlie etc.).
'getting admission to' means one lot of letters goes inside another.
'at sea' indicates an anagram.
'elope' with letters rearranged gives 'eploe'.
'r' going into 'eploe' is 'eplore'.
'd'+'eplore'='DEPLORE'
(Other definitions for deplore that I've seen before include "Bemoan" , "Regret deeply and strongly disapprove" , "Condemn" , "Express disgust at" , "Regret, censure" .)