Read out challenge (4)
I believe the answer is:
dare
'challenge' is the definition.
(daring is a kind of challenging)
'read out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'read' is an anagram of 'DARE'.
(Other definitions for dare that I've seen before include "Venture to read" , "Challenge to do something dangerous" , "Throw down the gauntlet" , "Be brave enough" , "Have sufficient courage" .)