Exclamation of love, repeated with afterthought (4)
I believe the answer is:
oops
'exclamation of love repeated with afterthought' is the definition.
I can't tell whether this definition defines the answer.
'love repeated with afterthought' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'repeated' indicates the doubling of some letters.
'with' means one lot of letters go next to another.
'afterthought' becomes 'ps' (as in a PS in a letter).
'o' doubled is 'oo'.
'oo'+'ps'='OOPS'
Can you help me to learn more?
(Other definitions for oops that I've seen before include "Harem" , "Apologetic exclamation" , "Something's been spilt!" , "I'm sorry" , "My bad" .)