Cutting ends off pendant or charm (9)
I believe the answer is:
trenchant
'cutting' is the definition.
(I've seen this before)
'ends off pendant or charm' is the wordplay.
I cannot quite see how this works, but
'charm' could be 'enchant' (synonyms) and 'enchant' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for trenchant that I've seen before include "Forceful" , "Forthright, vigorous" , "biting" , "blunt" , "Clear-cut and hard-hitting" .)