Uncalled-for correspondence (4,6)
'uncalled-for correspondence' is the definition.
Although both the answer and 'correspondence' are nouns, they are not in the same form of the noun.
'for correspondence' is the wordplay.
'for' becomes 'dead' (I can't justify this - if you can you should believe this answer much more).
'correspondence' becomes 'letters' (written correspondence).
'dead'+'letters'='DEAD LETTERS'
Can you help me to learn more?
(Another definition for dead letters that I've seen is " Old laws".)
'uncalled-for correspondence' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe there's a link between them I don't understand?
'for correspondence' is the wordplay.
'for' becomes 'dead' (I can't justify this - if you can you should believe this answer much more).
'correspondence' becomes 'letter' (I've seen this before).
'dead'+'letter'='DEAD-LETTER'
Can you help me to learn more?
(Other definitions for dead letter that I've seen before include "no longer observed" , "Unresponsive landlord" , "Law no longer enforced" , "Ineffective rule" , "Itll not lead to prosecution" .)