Magician using weird crosses without hesitation (9)
I believe the answer is:
Here is my best explanation:
'magician' is the definition.
(sorceress is a kind of magician)
'weird crosses without hesitation' is the subsidiary indication.
'weird' indicates an anagram.
'without' means one lot of letters goes inside another.
'hesitation' becomes 'er'.
'crosses' with letters rearranged gives 'sorcess'.
'sorcess' going around 'er' is 'sorceress'.
'using' is the link.
(Other definitions for sorceress that I've seen before include "Enchanting female", "Witch", "Spell-casting female", "Say, Medea" and "Female magician".)