Strong words for ultimate extremist (9)
I believe the answer is:
hardliner
'extremist' is the definition.
(I know that hardliner is a type of extremist)
'strong words for' is the wordplay.
'strong' becomes 'hard' (synonyms).
'words for' becomes 'liner' (I am not sure about this - if you are sure you should believe this answer much more).
'hard'+'liner'='HARDLINER'
'ultimate' acts as a link.
This may not be right. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for hardliner that I've seen before include "Inflexible ideologue" , "dogmatic type" , "One pursuing an uncompromising policy" , "One committed to an uncompromising policy" , "Uncompromising advocate" .)