A sign of wrong and right we hear in a puzzle (8)
I believe the answer is:
acrostic
'a puzzle' is the definition.
(I've seen this before)
'a sign of wrong and right we hear' is the wordplay.
I cannot really see how this works, but
'a' is present in the answer.
'of' could be 'o' and 'o' is found within the answer.
'right' could be 'r' (common abbreviation) and 'r' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'in' acts as a link.
Can you help me to learn more?
(Other definitions for acrostic that I've seen before include "Verse where eg the first letters in each line form a word or message" , "Word puzzle using initials of lines of poetry" , "a little puzzling" , "Poem where first letters of lines spell a word" , "Verse where certain letters in each line spell out a word or phrase" .)