Harm novice displaying no love for saint? (6)
I believe the answer is:
martyr
'saint?' is the definition.
(thesaurus)
'harm novice displaying no love' is the wordplay.
'harm' becomes 'mar' (I've seen this before).
'novice' becomes 'tyro' (term for a beginner).
'displaying no' indicates named letters should be taken away.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'tyro' with 'o' taken away is 'tyr'.
'mar'+'tyr'='MARTYR'
'for' acts as a link.
(Other definitions for martyr that I've seen before include "Sufferer for faith" , "Victim of suffering" , "One killed for faith" , "may be one hounded to death" , "One suffering for conscience" .)