Study one supposedly monstrous location, being well prepared (9)
I believe the answer is:
readiness
'well prepared' is the definition.
'readiness' can be an answer for 'prepared' (I've seen this before). I'm not certain of the 'well' bit.
'study one supposedly monstrous location' is the wordplay.
'study' becomes 'read' (synonyms).
'one' becomes 'i' (Roman numeral).
'supposedly monstrous location' becomes 'ness' (as in the Loch Ness Monster).
'read'+'i'+'ness'='READINESS'
'being' acts as a link.
Can you help me to learn more?
(Other definitions for readiness that I've seen before include "Immediate availability" , "Promptitude" , "in prepared position" , "Inclination" , "State of being prepared and willing" .)