Getting a monarch out of chancery is risky (6)
I believe the answer is:
chancy
'risky' is the definition.
(synonyms)
'getting a monarch out of chancery' is the wordplay.
I cannot really see how this works, but
'a' could be 'an' and 'an' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
'is' acts as a link.
Can you help me to learn more?
(Other definitions for chancy that I've seen before include "Informally uncertain or risky" , "'Dodgy, dicey (6)'" .)