Dislike test said to be complicated (8)
I believe the answer is:
distaste
'dislike' is the definition.
(distaste is a kind of dislike)
'test said to be complicated' is the wordplay.
'to be complicated' indicates anagramming the letters.
'test'+'said'='testsaid'
'testsaid' is an anagram of 'DISTASTE'.
(Other definitions for distaste that I've seen before include "Feeling of dislike - unsavoury?" , "lack of relish?" , "Antipathy, aversion" , "Mild horror" , "Feeling of dislike or aversion" .)