Fear of getting a letter by mistake? (6)
I believe the answer is:
terror
'fear of' is the definition.
'terror' can be an answer for 'fear' (I've seen this before). I'm unsure of the 'of' bit.
'a letter by mistake?' is the wordplay.
'a letter' becomes 't' ().
'by' says to put letters next to each other.
'mistake?' becomes 'error' (synonyms).
't'+'error'='TERROR'
'getting' is the link.
Can you help me to learn more?
(Other definitions for terror that I've seen before include "Ovewhelming fear" , "Alarm" , "Panicky fright" , "State of extreme fear" , "Little brat" .)