Series of letters from subscriber I answered in Spanish? (7)
I believe the answer is:
iberian
'spanish?' is the definition.
(I've seen this before)
'series of letters from subscriber i answered' is the wordplay.
'IBERIAN' is hidden within the letters.
However, I am unsure how the hidden word is indicated.
'in' is the link.
Can you help me to learn more?
(Other definitions for iberian that I've seen before include "Person from Spain or Portugal" , "An ancient European" , "From Spain and/or Portugal" , "from SW Europe" , "south of the Pyrenees" .)