Sneer at corrupt monarch who might hail from Java? (9)
I believe the answer is:
easterner
'who might hail from java?' is the definition.
(Java is an Indonesian island)
'sneer at corrupt monarch' is the wordplay.
'corrupt' is an anagram indicator (a corrupted spelling of the word).
'monarch' becomes 'er' (short for Elizabeth Regina ie Queen Elizabeth).
'sneer'+'at'='sneerat'
'sneerat' is an anagram of 'eastern'.
'eastern'+'er'='EASTERNER'
(Other definitions for easterner that I've seen before include "Resident of Connecticut, perhaps" , "New Englander, for instance" , "resident of New Jersey?" , "New Yorker perhaps" , "One from the Orient" .)