Northern name full of love and understanding? Rubbish! (8)
I believe the answer is:
nonsense
'understanding? rubbish' is the definition.
'nonsense' can be an answer for 'rubbish' (I've seen this in another clue). I'm not sure about the 'understanding?' bit.
'northern name full of love and' is the wordplay.
'northern' becomes 'n' (abbreviation e.g. N. Ireland).
'name' becomes 'sense' (I am not sure about this - if you are sure you should believe this answer much more).
'full of' indicates putting letters inside.
'love' becomes 'o' (love means zero in tennis).
'and' becomes 'n' (common abbreviation for 'and').
'n'+'sense'='nsense'
'o'+'n'='on'
'nsense' enclosing 'on' is 'NONSENSE'.
Can you help me to learn more?
(Other definitions for nonsense that I've seen before include "Rubbish, twaddle" , "Codswallop, hooey" , "Bull" , "tripe" , "Rubbish, foolish talk" .)