Wrongly set down what is curiously simplest (8)
I believe the answer is:
misspelt
'wrongly set down what' is the definition.
I can't tell whether this defines the answer.
'curiously simplest' is the wordplay.
'curiously' is an anagram indicator.
'simplest' is an anagram of 'MISSPELT'.
'is' is the link.
Can you help me to learn more?
(Other definitions for misspelt that I've seen before include "literal?" , "Simplest (anag)" , "like velvit?" , "Having some dodgy characters present" , "badly written" .)