Tourist insults English monarch - that's out of line (9)
I believe the answer is:
sightseer
'tourist' is the definition.
(I know that sightseer is a type of tourist)
'insults english monarch that's out of line' is the wordplay.
I cannot really see how this works, but
'english' could be 'e' (abbreviation) and 'e' is found in the answer.
'monarch' could be 'er' (abbreviation for Elizabeth Regina, British Queen) and 'er' is present in the answer.
The remaining letters 'sights' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for sightseer that I've seen before include "Rubberneck" , "Tourist visiting scenes of interest" , "Tripper" , "Visitor to famous locations" .)