Missive (6)
'missive' is the definition.
(synonyms)
This is all the clue.
(Other definitions for letter that I've seen before include "Written character - landlord" , "Written message" , "A, B or C, for example" , "A written form of communication" , "he leases" .)
'missive' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for message that I've seen before include "Communication that is sent" , "meaning" , "Missive" , "Errand" , "Signal" .)
'missive' is the definition.
(epistle is a kind of missive)
This is all the clue.
(Other definitions for epistle that I've seen before include "a for instance" , "communication" , "Writing" , "may be written off" , "Apostle's letter" .)