Longings of blue heart sets English apart (5)
I believe the answer is:
lusts
'longings of blue' is the definition.
The definition and answer can be both feelings as well as being plural nouns.
Perhaps they are linked in a way I don't understand?
'heart sets english apart' is the wordplay.
'heart' becomes 'lu' (I am not sure about this - if you are sure you should believe this answer much more).
'english' becomes 'e' (abbreviation).
'apart' suggests deleting specific letters.
'sets' with 'e' taken away is 'sts'.
'lu'+'sts'='LUSTS'
Can you help me to learn more?
(Another definition for lusts that I've seen is " has desire".)