Partly ban a thematic thing one loathes (8)
I believe the answer is:
anathema
'thing one loathes' is the definition.
I can't judge whether this definition defines the answer.
'partly ban a thematic' is the wordplay.
'partly' says the answer is hidden in the clue (part of the clue is used).
'ANATHEMA' is hidden in the letters of 'ban a thematic'.
Can you help me to learn more?
(Other definitions for anathema that I've seen before include "One hated" , "hated person" , "Cursed thing" , "Detested person or thing - excommunication" , "Condemned or excommunicated by church" .)